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Evangelidis P, Evangelidis N, Vlachaki E, Gavriilaki E. What is the role of complement in bystander hemolysis? Old concept, new insights. Expert Rev Hematol 2024; 17:107-116. [PMID: 38708453 DOI: 10.1080/17474086.2024.2348662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Accepted: 04/24/2024] [Indexed: 05/07/2024]
Abstract
INTRODUCTION Bystander hemolysis occurs when antigen-negative red blood cells (RBCs) are lysed by the complement system. Many clinical entities including passenger lymphocyte syndrome, hyperhemolysis following blood transfusion, and paroxysmal nocturnal hemoglobinuria are complicated by bystander hemolysis. AREAS COVERED The review provides data about the role of the complement system in the pathogenesis of bystander hemolysis. Moreover, future perspectives on the understanding and management of this syndrome are described. EXPERT OPINION Complement system can be activated via classical, alternative, and lectin pathways. Classical pathway activation is mediated by antigen-antibody (autoantibodies and alloantibodies against autologous RBCs, infectious agents) complexes. Alternative pathway initiation is triggered by heme, RBC microvesicles, and endothelial injury that is a result of intravascular hemolysis. Thus, C5b is formed, binds with C6-C9 compomers, and MAC (C5b-9) is formulated in bystander RBCs membranes, leading to cell lysis. Intravascular hemolysis, results in activation of the alternative pathway, establishing a vicious cycle between complement activation and bystander hemolysis. C5 inhibitors have been used effectively in patients with hyperhemolysis syndrome and other entities characterized by bystander hemolysis.
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Affiliation(s)
- Paschalis Evangelidis
- Second Propedeutic Department of Internal Medicine, Hippocration Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Nikolaos Evangelidis
- Second Propedeutic Department of Internal Medicine, Hippocration Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Efthymia Vlachaki
- Adult Thalassemia Unit, 2nd Department of Internal Medicine, Aristotle University of Thessaloniki, Hippocration General Hospital, Thessaloniki, Greece
| | - Eleni Gavriilaki
- Second Propedeutic Department of Internal Medicine, Hippocration Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Hu W, Liu Y, Lian C, Lu H. Genetic insight into putative causes of xanthelasma palpebrarum: a Mendelian randomization study. Front Immunol 2024; 15:1347112. [PMID: 38601164 PMCID: PMC11004296 DOI: 10.3389/fimmu.2024.1347112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 03/18/2024] [Indexed: 04/12/2024] Open
Abstract
Xanthelasma palpebrarum (XP) is the most common form of cutaneous xanthoma, with a prevalence of 1.1%~4.4% in the population. However, the cause of XP remains largely unknown. In the present study, we used Mendelian randomization to assess the genetic association between plasma lipids, metabolic traits, and circulating protein with XP, leveraging summary statistics from large genome-wide association studies (GWAS). Genetically predicted plasma cholesterol and LDL-C, but not HDL-C or triglyceride, were significantly associated with XP. Metabolic traits, including BMI, fasting glucose, type 2 diabetes, systolic and diastolic blood pressure, were not significantly associated with XP. Furthermore, we found genetically predicted 12 circulating proteins were associated with XP, including FN1, NTM, FCN2, GOLM1, ICAM5, PDE5A, C5, CLEC11A, CXCL1, CCL2, CCL11, CCL13. In conclusion, this study identified plasma cholesterol, LDL-C, and 12 circulating proteins to be putative causal factors for XP, highlighting the role of plasma cholesterol and inflammatory response in XP development.
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Affiliation(s)
- Wenting Hu
- Department of Dermatology, Shenzhen Second People’s Hospital, Shenzhen, Guangdong, China
| | - Yaozhong Liu
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI, United States
| | - Cuihong Lian
- Department of Dermatology, Shenzhen Second People’s Hospital, Shenzhen, Guangdong, China
| | - Haocheng Lu
- Department of Pharmacology, Joint Laboratory of Guangdong-Hong Kong Universities for Vascular Homeostasis and Diseases, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong, China
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3
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Cui C, Tang X, Xing J, Sheng X, Chi H, Zhan W. Single-cell RNA-seq revealed heterogeneous responses and functional differentiation of hemocytes against white spot syndrome virus infection in Litopenaeus vannamei. J Virol 2024; 98:e0180523. [PMID: 38323810 PMCID: PMC10949519 DOI: 10.1128/jvi.01805-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 01/12/2024] [Indexed: 02/08/2024] Open
Abstract
Shrimp hemocytes are the vital immune cells participating in innate immune response to defend against viruses. However, the lack of specific molecular markers for shrimp hemocyte hindered the insightful understanding of their functional clusters and differential roles in combating microbial infections. In this study, we used single-cell RNA sequencing to map the transcriptomic landscape of hemocytes from the white spot syndrome virus (WSSV)-infected Litopenaeus vannamei and conjointly analyzed with our previous published single-cell RNA sequencing technology data from the healthy hemocytes. A total of 16 transcriptionally distinct cell clusters were identified, which occupied different proportions in healthy and WSSV-infected hemocytes and exerted differential roles in antiviral immune response. Following mapping of the sequencing data to the WSSV genome, we found that all types of hemocytes could be invaded by WSSV virions, especially the cluster 8, which showed the highest transcriptional levels of WSSV genes and exhibited a cell type-specific antiviral response to the viral infection. Further evaluation of the cell clusters revealed the delicate dynamic balance between hemocyte immune response and viral infestation. Unsupervised pseudo-time analysis of hemocytes showed that the hemocytes in immune-resting state could be significantly activated upon WSSV infection and then functionally differentiated to different hemocyte subsets. Collectively, our results revealed the differential responses of shrimp hemocytes and the process of immune-functional differentiation post-WSSV infection, providing essential resource for the systematic insight into the synergistic immune response mechanism against viral infection among hemocyte subtypes. IMPORTANCE Current knowledge of shrimp hemocyte classification mainly comes from morphology, which hinder in-depth characterization of cell lineage development, functional differentiation, and different immune response of hemocyte types during pathogenic infections. Here, single-cell RNA sequencing was used for mapping hemocytes during white spot syndrome virus (WSSV) infection in Litopenaeus vannamei, identifying 16 cell clusters and evaluating their potential antiviral functional characteristics. We have described the dynamic balance between viral infestation and hemocyte immunity. And the functional differentiation of hemocytes under WSSV stimulation was further characterized. Our results provided a comprehensive transcriptional landscape and revealed the heterogeneous immune response in shrimp hemocytes during WSSV infection.
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Affiliation(s)
- Chuang Cui
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, China
| | - Xiaoqian Tang
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jing Xing
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xiuzhen Sheng
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Heng Chi
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Wenbin Zhan
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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Berger JR, Hartung HP. Commentary: Progressive multifocal leukoencephalopathy genetic risk variants for pharmacovigilance of immunosuppressant therapies. Front Neurol 2023; 14:1146027. [PMID: 37006492 PMCID: PMC10062523 DOI: 10.3389/fneur.2023.1146027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 02/09/2023] [Indexed: 03/18/2023] Open
Affiliation(s)
- Joseph R. Berger
- Department of Neurology, Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA, United States
- *Correspondence: Joseph R. Berger
| | - Hans-Peter Hartung
- Department of Neurology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
- Brain and Mind Center, University of Sydney, Sydney, NSW, Australia
- Department of Neurology, Palacky University, Olomouc, Czechia
- Hans-Peter Hartung
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Tereshchenko SY, Smolnikova MV, Freidin MB. Ficolin-3 and MASP-2 gene variants in Siberian arctic populations: Summarized evidence of selective pressure for the high frequency of lectin complement pathway deficiency. Scand J Immunol 2023; 97:e13249. [PMID: 36574978 DOI: 10.1111/sji.13249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 12/07/2022] [Accepted: 12/19/2022] [Indexed: 12/29/2022]
Abstract
Herewith, we provide novel original data about the prevalence of FCN3 rs532781899 and MASP2 rs72550870 variants among the newborns of aboriginal Siberian Arctic populations (Nenets and Dolgan-Nganasans) and Russians of East Siberia. This novel data has been analysed along with the genetic data about other proteins of the lectin pathway of the complement system (mannose-binding lectin and ficolin-2) obtained earlier. A total of 926 specimens of dried blood spots of the newborns were genotyped. The newborns represented four populations: Nenets, Dolgan-Nganasans, Mixed aboriginal population, and Russians (Caucasians) to study the prevalence of single nucleotide polymorphisms of FCN3 rs532781899 and MASP2 rs72550870. The prevalence of the deletion allele of the rs532781899 variant in the FCN3 gene associated with the decreased production of ficolin-3 was found to be increased in Russians compared to the Nenets aboriginal populations (P = .002). The prevalence of the rs72550870*G allele in the MASP2 gene associated with low serum protease activity was found to be increased in Russians compared with Nenets and Dolgan-Nganasans (P < .001 and P = .03, respectively). The results of the current study and our previous findings corroborate with a hypothesis that human evolution has been directed toward the accumulation of genotypes associated with low activity of the lectin complement activation pathway.
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Affiliation(s)
- Sergey Yu Tereshchenko
- Federal Research Center "Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences", Research Institute of Medical Problems of the North, Krasnoyarsk, Russia
| | - Marina V Smolnikova
- Federal Research Center "Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences", Research Institute of Medical Problems of the North, Krasnoyarsk, Russia
| | - Maxim B Freidin
- Tomsk National Research Medical Centre, Research Institute of Medical Genetics, Tomsk, Russia.,King's College London, School of Life Course Sciences, Department of Twin Research and Genetic Epidemiology, London, UK
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Bouqdayr M, Baba H, Saih A, Abbad A, Hamdi S, Marih L, Sodqi M, Ouladlahsen A, Marhoum El Filali K, Moussamih S, Saile R, Kettani A, Wakrim L. MBL2 gene polymorphisms related to HIV-1 infection susceptibility and treatment response. Hum Immunol 2023; 84:80-8. [PMID: 36257838 DOI: 10.1016/j.humimm.2022.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 09/28/2022] [Accepted: 09/29/2022] [Indexed: 11/04/2022]
Abstract
Human Mannose-binding lectin (MBL) is a protein encoded by MBL2 gene involved in the activation of the lectin-complement pathway. Several studies emphasized the role of MBL2 gene in several infectious diseases' susceptibility, including HIV-1 infection. We aim to investigate the impact of 10 MBL2 gene polymorphisms located in the promoter, 5'UTR and exon 1 regions on HIV-1 physiopathology. The polymorphisms genotyping of 400 individuals, which 200 were HIV-1 positive patients and 200 were controls, was performed by PCR-sequencing. Our results showed that rs503037 and rs1800451 polymorphisms are associated with a high risk of HIV-1 infection susceptibility while rs7096206 and rs11003123 showed a protective effect. A significant association between haplotype CGA and HIV-1 infection susceptibility was also found in the exon 1 region. Moreover, rs11003124, rs7084554, rs36014597 and rs11003123 polymorphisms revealed an association with treatment response outcome as measured by RNA viral load. This study highlights the importance of MBL2 polymorphisms in the modulation of HIV-1 infection susceptibility and the contribution to treatment response outcomes among Moroccan subjects.
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Xu J, Suo L, Zhao J, Cai T, Mei N, Du P, Gao C, Fang Y, Jiang Y, Zhang JA. MBL2 polymorphism may be a protective factor of autoimmune thyroid disease susceptibility. Mol Genet Genomics 2023; 298:95-105. [PMID: 36318338 DOI: 10.1007/s00438-022-01960-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 09/28/2022] [Indexed: 01/07/2023]
Abstract
Genetic susceptibility is an essential pathogenetic mechanism in autoimmune thyroid disease (AITD). MBL2 gene polymorphisms have been shown to play a vital role in the pathogenesis of multiple autoimmune disorders, but its contribution to AITD is unclear. The aim of this study was to assess the linkage between MBL2 gene polymorphisms and AITD susceptibility in a Chinese Han population. One thousand seven hundred sixty seven subjects consisting of 965 AITD patients and 802 controls from a Chinese Han population were enrolled in the case-control study. Four common single-nucleotide polymorphisms (SNPs) in the MBL2 gene were tested using high-throughput sequencing technology for sequence-based SNP genotyping. The allele and genotype distribution results showed that the minor alleles of rs198266, rs10824793, and rs4935046 were significantly lower in Hashimoto's thyroiditis (HT) patients than in healthy controls. In further genetic model analysis, the dominant models of rs1982266, rs10824793, and rs4935046 for MBL2 in the AITD group exhibited a lower risk of morbidity. Finally, we discovered that haplotype AAGC was associated with Graves' disease (GD), while AGC was associated with HT. Our study provides strong evidence for a genetic correlation between MBL2 and AITD, and the polymorphism of the MBL2 gene may be a protective factor for AITD, especially for HT. These findings can advance our understanding of the etiology of AITD, as well as provide guidance for prevention and intervention toward AITD.
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Affiliation(s)
- Jianbin Xu
- Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China
| | - Lixia Suo
- Department of Endocrinology, Jiading District Central Hospital Affiliated Shanghai University of Medicine and Health Sciences, Shanghai, 201899, China
| | - Jing Zhao
- Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China
| | - Tiantian Cai
- Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China
| | - Na Mei
- Department of Rehabilitation, Tongde Hospital of Zhejiang Province, Hangzhou, 310012, Zhejiang, China
| | - Peng Du
- Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China
| | - Chaoqun Gao
- Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China
| | - Yudie Fang
- Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China
| | - Yanfei Jiang
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China.
| | - Jin-An Zhang
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China.
- Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
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Gil-Quiñones SR, Gutierrez-Castañeda L, Larios-Salazar L, Mejia-Mesa S, Motta A, Tovar-Parra D. Effect of Polymorphisms in the FCN1, FCN2, and FCN3 Genes on the Susceptibility to Develop Rheumatoid Arthritis: A Systematic Review. Int J Rheumatol 2022; 2022:1730996. [PMID: 36569030 DOI: 10.1155/2022/1730996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/12/2022] [Accepted: 11/17/2022] [Indexed: 12/23/2022] Open
Abstract
Genetic association studies in rheumatoid arthritis conducted in various populations have yielded heterogeneous results. The present systematic review was conducted to synthesize the results of the studies in order to establish the impact of polymorphisms in the ficolin-coding genes FCN1, FCN2, and FCN3 on the susceptibility to develop rheumatoid arthritis. A systematic literature review was performed using the following keywords "gene (FCN1/FCN2/FCN3)", "Polymorphism/Genetic Variant", and "rheumatoid arthritis" in different databases until January 2022. Authors assessed articles by title/abstract and then assessed by full text for data extraction. The risk of bias was assessed using the Newcastle-Ottawa scale. Data synthesis was performed qualitatively and quantitatively. A total of 1519 articles were eligible for inclusion in this review, 3 were identified as relevant for the quantitative synthesis with 670 patients and 1019 controls. For the FCN1 gene, an association was found in the dominant and recessive genetic models of the variants rs2989727 (genotype TT = OR: 0.577, 95% CI: 0.430-0.769) and rs1071583 (genotype GG = OR: 1.537, 95% CI: 1.153-2.049, p = 0.0032) with the development of rheumatoid arthritis as a protective or susceptibility factor. FCN2 and FCN3 genes did not show association with disease development. The FCN1 gene variants rs2989727 and rs1071583 are associated with the risk of developing rheumatoid arthritis in populations from Brazil and Belgium, but not in FCN2 and FCN3 gene variants.
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Ruffles T, Basu K, Inglis SK, Bremner S, Rabe H, Memon A, Seddon P, Tavendale R, Palmer CNA, Mukhopadhyay S, Fidler K. Mannose-binding lectin genotype is associated with respiratory disease in young children: A multicenter cohort study. Pediatr Pulmonol 2022; 57:2824-2833. [PMID: 35949104 DOI: 10.1002/ppul.26109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 08/02/2022] [Accepted: 08/09/2022] [Indexed: 11/12/2022]
Abstract
BACKGROUND Mannose-binding lectin (MBL) is an important component of the innate immune system. Polymorphisms in the MBL2 gene and promoter region are directly associated with MBL-deficiency. We sought to determine the association between MBL genotype on the frequency of common childhood respiratory infections, respiratory symptoms, and atopic outcomes in early childhood. METHODS MBL2 gene variants were analyzed in newborns recruited to the GO-CHILD multicenter prospective cohort study. Follow-up for respiratory infection and atopy diagnoses and symptoms, healthcare utilization, and medication prescription were conducted by postal questionnaires at 12 and 24 months. RESULTS Genotyping and follow-up were completed in 1004 children. Genotypes associated with MBL-deficiency were associated with an increased risk of bronchiolitis (relative risk [RR] 1.95, 95% confidence interval [CI] 1.33-2.85) and pneumonia (RR 2.46, 95% CI 1.16-5.22). MBL-deficient genotypes were associated with an increased risk of wheeze with shortness of breath episodes (RR 1.22, 95% CI 1.04-1.43), emergency department attendance (RR 1.90 95% CI 1.13-3.19), and hospital admission (RR 2.01, 95% CI 1.04-3.89) for wheeze. MBL-deficient genotypes were associated with a reduced risk of developing atopic dermatitis (RR 0.72, 95% CI 0.53-0.98). CONCLUSION The positive association between MBL-deficient genotypes and bronchiolitis and pneumonia, as well as a severe wheeze phenotype in some young children, supports the hypothesis that MBL is an important component of innate immunity in the vulnerable period before the maturation of the adaptive immune system. Identification of disease-modifying genotypes may help target preventative strategies in high-risk infants.
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Affiliation(s)
- Tom Ruffles
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK.,Brighton and Sussex Medical School, Brighton, UK
| | - Kaninika Basu
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK.,Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Sarah K Inglis
- Tayside Clinical Trials Unit, University of Dundee, Dundee, UK
| | - Stephen Bremner
- Department of Primary Care and Public Health, Brighton and Sussex Medical School, Brighton, UK
| | - Heike Rabe
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK.,Brighton and Sussex Medical School, Brighton, UK
| | - Anjum Memon
- Department of Primary Care and Public Health, Brighton and Sussex Medical School, Brighton, UK
| | - Paul Seddon
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK.,Brighton and Sussex Medical School, Brighton, UK
| | - Roger Tavendale
- Biomedical Research Institute, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - Colin N A Palmer
- Pat McPherson Centre for Pharmacogenetics and Pharmacogenomics, School of Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | - Somnath Mukhopadhyay
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK.,Brighton and Sussex Medical School, Brighton, UK
| | - Katy Fidler
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK.,Brighton and Sussex Medical School, Brighton, UK
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Verweij SP, Peters RPH, Catsburg A, de Vries HJC, Ouburg S, Morré SA. Genetic Variation in the MBL2 Gene Is Associated with Chlamydia trachomatis Infection and Host Humoral Response to Chlamydia trachomatis Infection. Int J Mol Sci 2022; 23:ijms23169292. [PMID: 36012556 PMCID: PMC9409028 DOI: 10.3390/ijms23169292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/08/2022] [Accepted: 08/15/2022] [Indexed: 11/16/2022] Open
Abstract
This study aims to assess the potential association of MBL2 gene single nucleotide polymorphisms (SNPs) to Chlamydia trachomatis infection. We analysed a selected sample of 492 DNA and serum specimens from Dutch Caucasian women. Women were categorized into four groups of infection status based on the results of DNA and antibody tests for C. trachomatis: Ct-DNA+/IgG+, Ct-DNA+/IgG−, Ct-DNA−/IgG+, and Ct-DNA−/IgG−. We compared six MBL2 SNPs (−619G > C (H/L), −290G > C (Y/X), −66C > T (P/Q), +154C > T (A/D), +161A > G (A/B), and +170A > G (A/C)) and their respective haplotypes in relation to these different subgroups. The −619C (L) allele was less present within the Ct-DNA−/IgG+ group compared with the Ct-DNA−/IgG− group (OR = 0.49; 95% CI: 0.28−0.83), while the +170G (C) allele was observed more in the Ct-DNA+/IgG+ group as compared with the Ct-DNA−/IgG− group (OR = 2.4; 95% CI: 1.1−5.4). The HYA/HYA haplotype was more often present in the Ct-DNA−/IgG− group compared with the Ct-DNA+/IgG+ group (OR = 0.37; 95% CI: 0.16−0.87). The +170G (C) allele was associated with increased IgG production (p = 0.048) in C. trachomatis PCR-positive women. This study shows associations for MBL in immune reactions to C. trachomatis. We showed clear associations between MBL2 genotypes, haplotypes, and individuals’ stages of C. trachomatis DNA and IgG positivity.
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Affiliation(s)
- Stephan P. Verweij
- Department of Respiratory Medicine, University Medical Centre Utrecht, 3584 CX Utrecht, The Netherlands
- Correspondence:
| | - Remco P. H. Peters
- Research Unit, Foundation for Professional Development, East London 5200, South Africa
- Department of Medical Microbiology, University of Pretoria, Pretoria P.O. Box 14679, South Africa
| | | | - Henry J. C. de Vries
- Cluster of Infectious Diseases, Public Health Service Amsterdam, 1018 WT Amsterdam, The Netherlands
- Center for Infection and Immunity Amsterdam (CINIMA), Department of Internal Medicine, Division of Infectious Diseases, Amsterdam University Medical Centers, 1105 AZ Amsterdam, The Netherlands
- Department of Dermatology, Amsterdam University Medical Centers, 1105 AZ Amsterdam, The Netherlands
- Centre for Infectious Diseases Control, National Institute for Public Health and the Environment (Rijksinstituut voor Volksgezondheid en Milieu, RIVM), 3720 BA Bilthoven, The Netherlands
| | - Sander Ouburg
- Microbe & Lab B.V., 1105 AG Amsterdam, The Netherlands
| | - Servaas A. Morré
- Department of Genetics and Cell Biology, Faculty of Health, Medicine & Life Sciences, Institute of Public Health Genomics, Research Institute GROW, University of Maastricht, 6216 LK Maastricht, The Netherlands
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Banda NK, Deane KD, Bemis EA, Strickland C, Seifert J, Jordan K, Goldman K, Morgan BP, Moreland LW, Lewis MJ, Pitzalis C, Holers VM. Analysis of Complement Gene Expression, Clinical Associations, and Biodistribution of Complement Proteins in the Synovium of Early Rheumatoid Arthritis Patients Reveals Unique Pathophysiologic Features. J Immunol 2022; 208:2482-2496. [PMID: 35500934 PMCID: PMC9133225 DOI: 10.4049/jimmunol.2101170] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 03/17/2022] [Indexed: 01/31/2023]
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease characterized by synovial hyperplasia and inflammation. The finding of autoantibodies in seropositive RA suggests that complement system activation might play a pathophysiologic role due to the local presence of immune complexes in the joints. Our first objective was to explore the Pathobiology of Early Arthritis Cohort (PEAC) mRNA sequencing data for correlations between clinical disease severity as measured by DAS28-ESR (disease activity score in 28 joints for erythrocyte sedimentation rate) and complement system gene expression, both in the synovium and in blood. Our second objective was to determine the biodistribution using multiplex immunohistochemical staining of specific complement activation proteins and inhibitors from subjects in the Accelerating Medicines Partnership (AMP) RA/SLE study. In the PEAC study, there were significant positive correlations between specific complement gene mRNA expression levels in the synovium and DAS28-ESR for the following complement genes: C2, FCN1, FCN3, CFB, CFP, C3AR1, C5AR1, and CR1 Additionally, there were significant negative correlations between DAS28-ESR and Colec12, C5, C6, MASP-1, CFH, and MCP In the synovium there were also significant positive correlations between DAS28-ESR and FcγR1A, FcγR1B, FcγR2A, and FcγR3A Notably, CFHR4 synovial expression was positively correlated following treatment with the DAS28-ESR at 6 mo, suggesting a role in worse therapeutic responses. The inverse correlation of C5 RNA expression in the synovium may underlie the failure of significant benefit from C5/C5aR inhibitors in clinical trials performed in patients with RA. Multiplex immunohistochemical analyses of early RA synovium reveal significant evidence of regional alterations of activation and inhibitory factors that likely promote local complement activation.
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Affiliation(s)
- Nirmal K Banda
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO;
| | - Kevin D Deane
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Elizabeth A Bemis
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Colin Strickland
- Department of Radiology, University of Colorado Anschutz Medical Campus, Aurora, CO
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Jennifer Seifert
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Kimberly Jordan
- Human Immune Monitoring Shared Resource, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Katriona Goldman
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, U.K.; and
| | - B Paul Morgan
- Systems Immunity URI, Division of Infection and Immunity, and UK Dementia Research Institute Cardiff, School of Medicine, Cardiff University, Cardiff, U.K
| | - Larry W Moreland
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Myles J Lewis
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, U.K.; and
| | - Costantino Pitzalis
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, U.K.; and
| | - V Michael Holers
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
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12
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Belmonte B, Mangogna A, Gulino A, Cancila V, Morello G, Agostinis C, Bulla R, Ricci G, Fraggetta F, Botto M, Garred P, Tedesco F. Distinct Roles of Classical and Lectin Pathways of Complement in Preeclamptic Placentae. Front Immunol 2022; 13:882298. [PMID: 35711467 PMCID: PMC9197446 DOI: 10.3389/fimmu.2022.882298] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/28/2022] [Indexed: 12/20/2022] Open
Abstract
Pre-eclampsia is a pregnancy complication characterized by defective vascular remodeling in maternal decidua responsible for reduced blood flow leading to functional and structural alterations in the placenta. We have investigated the contribution of the complement system to decidual vascular changes and showed that trophoblasts surrounding unremodeled vessels prevalent in preeclamptic decidua fail to express C1q that are clearly detected in cells around remodeled vessels predominant in control placenta. The critical role of C1q is supported by the finding that decidual trophoblasts of female C1qa-/- pregnant mice mated to C1qa+/+ male mice surrounding remodeled vessels express C1q of paternal origin. Unlike C1qa-/- pregnant mice, heterozygous C1qa+/- and wild type pregnant mice share a high percentage of remodeled vessels. C1q was also found in decidual vessels and stroma of normal placentae and the staining was stronger in preeclamptic placentae. Failure to detect placental deposition of C1r and C1s associated with C1q rules out complement activation through the classical pathway. Conversely, the intense staining of decidual endothelial cells and villous trophoblast for ficolin-3, MASP-1 and MASP-2 supports the activation of the lectin pathway that proceeds with the cleavage of C4 and C3 and the assembly of the terminal complex. These data extend to humans our previous findings of complement activation through the lectin pathway in an animal model of pre-eclampsia and provide evidence for an important contribution of C1q in decidual vascular remodeling.
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Affiliation(s)
- Beatrice Belmonte
- Tumor Immunology Unit, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
- Pathology Unit, Azienda Sanitaria Provinciale (ASP) Catania, “Gravina” Hospital, Caltagirone, Italy
| | - Alessandro Mangogna
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Alessandro Gulino
- Tumor Immunology Unit, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Valeria Cancila
- Tumor Immunology Unit, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Gaia Morello
- Tumor Immunology Unit, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, Palermo, Italy
| | - Chiara Agostinis
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Roberta Bulla
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Giuseppe Ricci
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
- Department of Medical, Surgical and Health Science, University of Trieste, Trieste, Italy
| | - Filippo Fraggetta
- Pathology Unit, Azienda Sanitaria Provinciale (ASP) Catania, “Gravina” Hospital, Caltagirone, Italy
| | - Marina Botto
- Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
- Imperial Lupus Centre, Imperial College Healthcare National Health Service (NHS) Trust, London, United Kingdom
| | - Peter Garred
- Laboratory of Molecular Medicine, Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Francesco Tedesco
- Istituto Auxologico Italiano, Laboratory of Immuno-Rheumatology, IRCCS, Milan, Italy
- *Correspondence: Francesco Tedesco,
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13
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Smolnikova MV, Tereshchenko SY. Proteins of the lectin pathway of the complement system activation: immunobiological functions, genetics and involvement in the pathogenesis of human diseases. Russian Journal of Infection and Immunity 2022. [DOI: 10.15789/2220-7619-pot-1777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The complement system is the most ancient components in the innate immunity, mainly functioning to primarily eliminate bacterial agents intravascularly. Moreover, the complement complex proteins play a role as a bridge between the systems of innate and adaptive immunity providing adequate conditions for maturation and differentiation of B- and T-lymphocytes. The complement system consists of plasma proteins and membrane receptors. Plasma proteins interact with each other via the three described cascade pathways lectin (which is most ancient phylogenetically), alternative and classical. Lectins are proteins comprising a separate superfamily of pattern-recognizing receptors able to sense molecules of oligo- and polysaccharide nature and induce their aggregation. Among all the lectins, ficolins (FCN) (common domain fibrinogen) and collectins (common domain collagen) mannose-binding lectin (MBL), hepatic and renal collectins have exert unique functions by complexing with carbohydrate components of microbial wall. Formation of a compound complex microbial wall polysaccharides + collectin/ficolin + specific mannose-binding lectin-associated serine proteases (MARP) results in the complement system activation, inflammatory reaction and bacterium elimination. Such scenario is proceeded along the lectin pathway compared to the two other pathways called classical and alternative. Examining a role of the complement system and congenital protein defects in the pathogenesis of various diseases is of topical interest because inborn deficiency of the complement components comprises at least 5% out of total primary immunodeficiency rate, whereas the aspects of their prevalence and pathogenesis remain unexplored. Relevance of investigating the complement system components for diverse populations is tremendous, taking into consideration accumulated evidence regarding an important role of the lectin pathway in viral infections. Lectins, the main proteins in the lectin pathway of the complement activation, are encoded by polymorphic genes, wherein single nucleotide polymorphisms (SNPs) result in altered protein conformation and expression, which, in turn, affects functionality and potential to respond to a pathogen. The distribution of the lectin polymorphic gene frequencies and their haplotypes displays extremely marked population differences. According to analyzing available data, population SNP frequencies including those associated with inborn deficiencies for components of the lectin pathway have been currently scarce or unexplored. hence, here we review major lectins and their functions, their functionally significant SNPs in diverse populations and their pathogenetic importance for host defense functions.
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14
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Yamaguchi Y, Zampino M, Tanaka T, Bandinelli S, Moaddel R, Fantoni G, Candia J, Ferrucci L, Semba RD. The Plasma Proteome Fingerprint Associated with Circulating Carotenoids and Retinol in Older Adults. J Nutr 2021; 152:40-48. [PMID: 34550359 PMCID: PMC8754576 DOI: 10.1093/jn/nxab340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/23/2021] [Accepted: 09/16/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Although diets rich in carotenoids are associated with reduced risks of cardiovascular disease, age-related macular degeneration, disability, and other adverse aging outcomes, the underlying biological mechanisms are not fully elucidated. OBJECTIVES To characterize the plasma proteome fingerprint associated with circulating carotenoid and retinol concentrations in older adults. METHODS In 728 adults ≥65 y participating in the Invecchiare in Chianti (InCHIANTI) Study, plasma α-carotene, β-carotene, β-cryptoxanthin, lutein, zeaxanthin, and lycopene were measured using HPLC. The SOMAscan assay was used to measure 1301 plasma proteins. Multivariable linear regression models were used to examine the relationship of individual carotenoids and retinol with plasma proteins. A false discovery rate approach was used to deal with multiple comparisons using a q-value < 0.05. RESULTS Plasma β-carotene, β-cryptoxanthin, lutein, zeaxanthin, and lycopene were associated with 85, 39, 4, 2, and 5 plasma proteins, respectively, in multivariable linear regression models adjusting for potential confounders (q < 0.05). No proteins were associated with α-carotene or retinol. Two or more carotenoids were positively associated with ferritin, 6-phosphogluconate dehydrogenase (decarboxylating), hepcidin, thrombospondin-2, and choline/ethanolamine kinase. The proteins associated with circulating carotenoids were related to energy metabolism, sirtuin signaling, inflammation and oxidative stress, iron metabolism, proteostasis, innate immunity, and longevity. CONCLUSIONS The plasma proteomic fingerprint associated with elevated circulating carotenoids in older adults provides insight into the mechanisms underlying the protective role of carotenoids on health.
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Affiliation(s)
| | - Marta Zampino
- National Institutes on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Toshiko Tanaka
- National Institutes on Aging, National Institutes of Health, Baltimore, MD, USA
| | | | - Ruin Moaddel
- National Institutes on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Giovanna Fantoni
- National Institutes on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Julián Candia
- National Institutes on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Luigi Ferrucci
- National Institutes on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Richard D Semba
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA,Center for a Livable Future, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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15
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Rhee J, Kuznetsov A, McKay T, Lyons M, Houstis N, Mekkonen J, Ethridge B, Ibala R, Hahm E, Gitlin J, Guseh JS, Kitchen R, Rosenzweig A, Shaefi S, Flaczyk A, Qu J, Akeju O. Serum Proteomics of Older Patients Undergoing Major Cardiac Surgery: Identification of Biomarkers Associated With Postoperative Delirium. Front Aging Neurosci 2021; 13:699763. [PMID: 34456709 PMCID: PMC8386117 DOI: 10.3389/fnagi.2021.699763] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 06/18/2021] [Indexed: 11/28/2022] Open
Abstract
Background Postoperative delirium (POD) is an acute altered mental state commonly encountered after cardiac surgery. The pathophysiological mechanisms underlying POD remain unclear. We aimed to identify circulating proteins significantly altered after major cardiac surgery with cardiopulmonary bypass (CPB). We also aimed to enable inferences on associations with POD. Methods Serum and whole blood samples were collected before CPB (n = 16 patients; n = 8 with POD) and again from the same patients on postoperative day 1. All patients were clinically evaluated for POD on postoperative days 1–3. An aptamer-based proteomics platform (SOMAscan) was used to quantify serum protein abundance in patients with POD compared with non-POD controls. We also performed a lipopolysaccharide (LPS)-based in vitro functional analysis (TruCulture) on whole blood samples from patients with POD and non-POD controls to approximate surgical stress. Cytokine levels were determined using a Luminex immunoassay. Results Cardiac surgery with CPB resulted in a significant (padj < 0.01) change in 48.8% (637 out of 1,305) of proteins detected by SOMAscan. Gene set enrichment showed that the most impacted biological processes involved myeloid cell activation. Specifically, activation and degranulation of neutrophils were the top five highest-scoring processes. Pathway analyses with the Kyoto Encyclopedia of Genes and Genomes (KEGG) showed that metabolic enzymes, particularly those of glycolysis, were elevated in serum concentration after surgery. Several proteins were significantly increased postoperatively in patients diagnosed with POD relative to the non-POD controls, with interleukin-6 (IL-6) showing the greatest fold-change. LPS stimulation of whole blood samples confirmed these findings. Linear regression analysis showed a highly significant correlation between Confusion Assessment Method (CAM) scores and CPB-mediated changes in cGMP-inhibited 3′,5′-cyclic phosphodiesterase A (PDE3A). Conclusions Cardiac surgery with CPB resulted in inflammasome changes accompanied by unexpected increases in metabolic pathways. In exploratory analyses, we found that POD was associated with changes in the expression level of various proteins, most notably IL-6 and PDE3A. This study and ongoing protein biomarker studies will likely help quantify risk or confirm the diagnosis for POD and increase understanding of its pathophysiological mechanisms.
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Affiliation(s)
- James Rhee
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States.,Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Alexandra Kuznetsov
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Tina McKay
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Margaret Lyons
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States.,Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Nicholas Houstis
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Jennifer Mekkonen
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Breanna Ethridge
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Reine Ibala
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Eunice Hahm
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Jacob Gitlin
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - J Sawalla Guseh
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Robert Kitchen
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Anthony Rosenzweig
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Shahzad Shaefi
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Adam Flaczyk
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Jason Qu
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Oluwaseun Akeju
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
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16
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Vogt S, Leuppi JD, Schuetz P, Mueller B, Volken C, Dräger S, Trendelenburg M, Rutishauser J, Osthoff M. Association of mannose-binding lectin, ficolin-2 and immunoglobulin concentrations with future exacerbations in patients with chronic obstructive pulmonary disease: secondary analysis of the randomized controlled REDUCE trial. Respir Res 2021; 22:227. [PMID: 34391418 PMCID: PMC8364051 DOI: 10.1186/s12931-021-01822-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 08/09/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The innate and adaptive immune system is involved in the airway inflammation associated with acute exacerbations in patients with chronic obstructive pulmonary disease (COPD). We evaluated the association of mannose-binding lectin (MBL), immunoglobulin (Ig) and ficolin-2 concentrations with COPD exacerbations and according to the glucocorticoid treatment duration for an index exacerbation. METHODS Post-hoc analysis of the randomized, double-blind, placebo-controlled REDUCE trial of 5 vs. 14 days of glucocorticoid treatment for an index exacerbation. MBL, ficolin-2 and total IgG/IgA and subclass concentrations were determined in stored samples drawn (n = 178) 30 days after the index exacerbation and associated with the risk of re-exacerbation during a 180-day follow-up period. RESULTS IgG and subclass concentrations were significantly lower after 14 days vs. 5 days of glucocorticoid treatment. Patients with higher MBL concentrations were more likely to suffer from a future exacerbation (multivariable hazard ratio 1.03 per 200 ng/ml increase (95% confidence interval (CI) 1.00-1.06), p = 0.048), whereas ficolin-2 and IgG deficiency were not associated. The risk was most pronounced in patients with high MBL concentrations, IgG deficiency and 14 days of glucocorticoid treatment pointing towards an interactive effect of MBL and IgG deficiency in the presence of prolonged glucocorticoid treatment duration [Relative excess risk due to interaction 2.13 (95% CI - 0.41-4.66, p = 0.10)]. IgG concentrations were significantly lower in patients with frequent re-exacerbations (IgG, 7.81 g/L vs. 9.53 g/L, p = 0.03). CONCLUSIONS MBL modified the short-term exacerbation risk after a recent acute exacerbation of COPD, particularly in the setting of concurrent IgG deficiency and recent prolonged systemic glucocorticoid treatment. Ficolin-2 did not emerge as a predictor of a future exacerbation risk.
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Affiliation(s)
- Severin Vogt
- Division of Internal Medicine, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
| | - Jörg D Leuppi
- Department of Medicine, Kantonsspital Baselland, Liestal, Switzerland
| | - Philipp Schuetz
- Medical University Department, Kantonsspital Aarau, Aarau, Switzerland
- Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Beat Mueller
- Medical University Department, Kantonsspital Aarau, Aarau, Switzerland
- Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Carmen Volken
- Central Laboratory, Kantonsspital Baselland, Bruderholz, Switzerland
| | - Sarah Dräger
- Division of Internal Medicine, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
- Department of Clinical Research, University of Basel, Basel, Switzerland
| | - Marten Trendelenburg
- Division of Internal Medicine, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
- Department of Clinical Research, University of Basel, Basel, Switzerland
| | - Jonas Rutishauser
- Faculty of Medicine, University of Basel, Basel, Switzerland
- Department of Medicine, Clinical Trial Unit, Kantonsspital Baden, Baden, Switzerland
| | - Michael Osthoff
- Division of Internal Medicine, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland.
- Department of Clinical Research, University of Basel, Basel, Switzerland.
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17
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Rhee J, Kuznetsov A, McKay T, Lyons M, Houstis N, Mekkonen J, Ethridge B, Ibala R, Hahm E, Gitlin J, Guseh JS, Kitchen R, Rosenzweig A, Shaefi S, Flaczyk A, Qu J, Akeju O. Serum Proteomics of Older Patients Undergoing Major Cardiac Surgery: Identification of Biomarkers Associated With Postoperative Delirium. Front Aging Neurosci 2021; 13:699763. [PMID: 34456709 DOI: 10.3389/fnagi.2021.699763pmid-] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 06/18/2021] [Indexed: 05/25/2023] Open
Abstract
BACKGROUND Postoperative delirium (POD) is an acute altered mental state commonly encountered after cardiac surgery. The pathophysiological mechanisms underlying POD remain unclear. We aimed to identify circulating proteins significantly altered after major cardiac surgery with cardiopulmonary bypass (CPB). We also aimed to enable inferences on associations with POD. METHODS Serum and whole blood samples were collected before CPB (n = 16 patients; n = 8 with POD) and again from the same patients on postoperative day 1. All patients were clinically evaluated for POD on postoperative days 1-3. An aptamer-based proteomics platform (SOMAscan) was used to quantify serum protein abundance in patients with POD compared with non-POD controls. We also performed a lipopolysaccharide (LPS)-based in vitro functional analysis (TruCulture) on whole blood samples from patients with POD and non-POD controls to approximate surgical stress. Cytokine levels were determined using a Luminex immunoassay. RESULTS Cardiac surgery with CPB resulted in a significant (padj < 0.01) change in 48.8% (637 out of 1,305) of proteins detected by SOMAscan. Gene set enrichment showed that the most impacted biological processes involved myeloid cell activation. Specifically, activation and degranulation of neutrophils were the top five highest-scoring processes. Pathway analyses with the Kyoto Encyclopedia of Genes and Genomes (KEGG) showed that metabolic enzymes, particularly those of glycolysis, were elevated in serum concentration after surgery. Several proteins were significantly increased postoperatively in patients diagnosed with POD relative to the non-POD controls, with interleukin-6 (IL-6) showing the greatest fold-change. LPS stimulation of whole blood samples confirmed these findings. Linear regression analysis showed a highly significant correlation between Confusion Assessment Method (CAM) scores and CPB-mediated changes in cGMP-inhibited 3',5'-cyclic phosphodiesterase A (PDE3A). CONCLUSIONS Cardiac surgery with CPB resulted in inflammasome changes accompanied by unexpected increases in metabolic pathways. In exploratory analyses, we found that POD was associated with changes in the expression level of various proteins, most notably IL-6 and PDE3A. This study and ongoing protein biomarker studies will likely help quantify risk or confirm the diagnosis for POD and increase understanding of its pathophysiological mechanisms.
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Affiliation(s)
- James Rhee
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Alexandra Kuznetsov
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Tina McKay
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Margaret Lyons
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Nicholas Houstis
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Jennifer Mekkonen
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Breanna Ethridge
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Reine Ibala
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Eunice Hahm
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Jacob Gitlin
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - J Sawalla Guseh
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Robert Kitchen
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Anthony Rosenzweig
- Corrigan Minehan Heart Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Shahzad Shaefi
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Adam Flaczyk
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Jason Qu
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Oluwaseun Akeju
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
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18
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Kraivong R, Punyadee N, Liszewski MK, Atkinson JP, Avirutnan P. Dengue and the Lectin Pathway of the Complement System. Viruses 2021; 13:1219. [PMID: 34202570 DOI: 10.3390/v13071219] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/17/2021] [Accepted: 06/19/2021] [Indexed: 12/15/2022] Open
Abstract
Dengue is a mosquito-borne viral disease causing significant health and economic burdens globally. The dengue virus (DENV) comprises four serotypes (DENV1-4). Usually, the primary infection is asymptomatic or causes mild dengue fever (DF), while secondary infections with a different serotype increase the risk of severe dengue disease (dengue hemorrhagic fever, DHF). Complement system activation induces inflammation and tissue injury, contributing to disease pathogenesis. However, in asymptomatic or primary infections, protective immunity largely results from the complement system’s lectin pathway (LP), which is activated through foreign glycan recognition. Differences in N-glycans displayed on the DENV envelope membrane influence the lectin pattern recognition receptor (PRR) binding efficiency. The important PRR, mannan binding lectin (MBL), mediates DENV neutralization through (1) a complement activation-independent mechanism via direct MBL glycan recognition, thereby inhibiting DENV attachment to host target cells, or (2) a complement activation-dependent mechanism following the attachment of complement opsonins C3b and C4b to virion surfaces. The serum concentrations of lectin PRRs and their polymorphisms influence these LP activities. Conversely, to escape the LP attack and enhance the infectivity, DENV utilizes the secreted form of nonstructural protein 1 (sNS1) to counteract the MBL effects, thereby increasing viral survival and dissemination.
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Leclerc CJ, Cooper TT, Bell GI, Lajoie GA, Flynn LE, Hess DA. Decellularized adipose tissue scaffolds guide hematopoietic differentiation and stimulate vascular regeneration in a hindlimb ischemia model. Biomaterials 2021; 274:120867. [PMID: 33992837 DOI: 10.1016/j.biomaterials.2021.120867] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 04/29/2021] [Accepted: 04/29/2021] [Indexed: 12/30/2022]
Abstract
Cellular therapies to stimulate therapeutic angiogenesis in individuals with critical limb ischemia (CLI) remain under intense investigation. In this context, the efficacy of cell therapy is dependent on the survival, biodistribution, and pro-angiogenic paracrine signaling of the cells transplanted. Hematopoietic progenitor cells (HPC) purified from human umbilical cord blood using high aldehyde dehydrogenase-activity (ALDHhi cells) and expanded ex vivo, represent a heterogeneous mixture of progenitor cells previously shown to support limb revascularization in mouse models of CLI. The objectives of this study were to investigate the utility of bioscaffolds derived from human decellularized adipose tissue (DAT) to guide the differentiation of seeded HPC in vitro and harness the pro-angiogenic capacity of HPC at the site of ischemia after implantation in vivo. Probing whether the DAT scaffolds altered HPC differentiation, label-free quantitative mass spectrometry and flow cytometric phenotype analyses indicated that culturing the HPC on the DAT scaffolds supported their differentiation towards the pro-angiogenic monocyte/macrophage lineage at the expense of megakaryopoiesis. Moreover, implantation of HPC in DAT scaffolds within a unilateral hindlimb ischemia model in NOD/SCID mice increased cell retention at the site of ischemia relative to intramuscular injection, and accelerated the recovery of limb perfusion, improved functional limb use and augmented CD31+ capillary density when compared to DAT implantation alone or saline-injected controls. Collectively, these data indicate that cell-instructive DAT scaffolds can direct therapeutic HPC differentiation towards the monocyte/macrophage lineage and represent a promising delivery platform for improving the efficacy of cell therapies for CLI.
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Affiliation(s)
- Christopher J Leclerc
- School of Biomedical Engineering, Amit Chakma Engineering Building, The University of Western Ontario, London, Ontario, Canada, N6A 5B9; Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories, Robarts Research Institute, London, Ontario, N6A 5B6, Canada
| | - Tyler T Cooper
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories, Robarts Research Institute, London, Ontario, N6A 5B6, Canada; Don Rix Protein Identification Facility, Department of Biochemistry, University of Western Ontario, London, Ontario, N6G 2V4, Canada
| | - Gillian I Bell
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories, Robarts Research Institute, London, Ontario, N6A 5B6, Canada
| | - Gilles A Lajoie
- Don Rix Protein Identification Facility, Department of Biochemistry, University of Western Ontario, London, Ontario, N6G 2V4, Canada
| | - Lauren E Flynn
- School of Biomedical Engineering, Amit Chakma Engineering Building, The University of Western Ontario, London, Ontario, Canada, N6A 5B9; Department of Chemical and Biochemical Engineering, Thompson Engineering Building, The University of Western Ontario, London, Ontario, N6A 5B9, Canada; Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, N6A 3K7, Canada
| | - David A Hess
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories, Robarts Research Institute, London, Ontario, N6A 5B6, Canada; Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, N6A 5C1, Canada.
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Jang H, Jun Y, Kim S, Kim E, Jung Y, Park BJ, Lee J, Kim J, Lee S, Kim J. FCN3 functions as a tumor suppressor of lung adenocarcinoma through induction of endoplasmic reticulum stress. Cell Death Dis 2021; 12:407. [PMID: 33859174 DOI: 10.1038/s41419-021-03675-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/23/2021] [Accepted: 03/23/2021] [Indexed: 11/17/2022]
Abstract
In this study, we report a novel function of FCN3 (Ficolin 3), a secreted lectin capable of activating the complement pathway, as a tumor suppressor of lung adenocarcinoma (LUAD). First, the expression of FCN3 was strongly down-regulated in cancer tissues compared to matched normal lung tissues, and down-regulation of FCN3 was shown to be significantly correlated with increased mortality among LUAD patients. Interestingly, while ectopic expression of FCN3 led to cell cycle arrest and apoptosis in A549 and H23 cells derived from LUAD, the secreted form of the protein had no effect on the cells. Rather, we found evidence indicating that activation of the unfolded protein response from endoplasmic reticulum (ER) stress is induced by ectopic expression of FCN3. Consistently, inhibition of ER stress response led to enhanced survival of the LUAD cells. Of note, the fibrinogen domain, which is not secreted, turned out to be both necessary and sufficient for induction of apoptosis when localized to ER, consistent with our proposed mechanism. Collectively, our data indicate that FCN3 is a tumor suppressor gene functioning through induction of ER stress.
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Song L, Ge T, Li Z, Sun J, Li G, Sun Y, Fang L, Ma YJ, Garred P. Artesunate: A natural product-based immunomodulator involved in human complement. Biomed Pharmacother 2021; 136:111234. [PMID: 33454596 DOI: 10.1016/j.biopha.2021.111234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/16/2020] [Accepted: 12/31/2020] [Indexed: 01/14/2023] Open
Abstract
Complement is an important innate immune defence machinery. Once dysregulated, it is often linked to pathogenesis of diverse autoimmune diseases. Artesunate (ART) is a well-known anti-malarial compound. Recently, ART has been highlighted by its potential therapeutic effects on certain complement-related autoimmune diseases. However, the underlying mechanisms are hitherto unknown. In the present study, we found that ART mediated complement interception as validated by analysis of complement haemolytic assay. In cell-based setup using dying Jurkat cells, ART-mediated complement interception was also confirmed. Further, we newly established an ELISA system selectively allowing complement activation via the classical pathway, the lectin pathway and the alternative pathway, respectively. ELISA analysis revealed that ART dose-dependently inhibited C4 activation, C3 activation and terminal complement complex assembly via the effector pathways. ART was found to blockade C1q, C3 and C5 with a lesser extent to properdin. The interaction of ART with C1q was determined to be mediated via C1q globular head region. FACS analysis using ART-conjugated mesoporous silica particles revealed that ART specifically bound the key therapeutic targets of C1q, C3 and C5 on microparticles. In conclusion, we for the first time report the anti-complement bioactivities of ART and suggest a potential therapeutic benefit of ART in the complement-related human diseases.
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Affiliation(s)
- Lihong Song
- The Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Ole Maaloesvej 26, 2200, Copenhagen N, Denmark; Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, China
| | - Tongqi Ge
- The Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Ole Maaloesvej 26, 2200, Copenhagen N, Denmark; School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, China
| | - Zeqin Li
- Department of Health Technology, Technical University of Denmark, Kongens Lyngby, 2800, Denmark
| | - Jinfeng Sun
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Yanbian University College of Pharmacy, Yanji, China
| | - Gao Li
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Yanbian University College of Pharmacy, Yanji, China
| | - Yi Sun
- Department of Health Technology, Technical University of Denmark, Kongens Lyngby, 2800, Denmark
| | - Liang Fang
- Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning, 110016, China.
| | - Ying Jie Ma
- The Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Ole Maaloesvej 26, 2200, Copenhagen N, Denmark.
| | - Peter Garred
- The Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Ole Maaloesvej 26, 2200, Copenhagen N, Denmark
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Tereshchenko SY, Smolnikova MV. Polymorphism of the mannose-binding lectin gene in the Arctic indigenous populations of the Russian Federation. Vavilovskii Zhurnal Genet Selektsii 2020; 24:868-875. [PMID: 35088000 PMCID: PMC8764514 DOI: 10.18699/vj20.685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/27/2020] [Accepted: 08/27/2020] [Indexed: 01/09/2023] Open
Abstract
Маннозосвязывающий лектин (mannose-binding lectin, MBL) – паттерн-распознающий острофазовый белок, относящийся к системе врожденного иммунитета и активно участвующий в элиминации широкого круга патогенных микроорганизмов посредством активации лектинового пути системы комплемента.
Значительная часть человеческой популяции имеет врожденно низкий уровень продукции и/или низкую
функциональную активность MBL вследствие носительства различных вариантов гена MBL2, что может модифицировать течение самых разнообразных инфекционных заболеваний. Частота генотипов и гаплотипов
полиморфизмов в гене MBL2 имеет значительные популяционные различия. К настоящему времени данные
относительно распределения генотипов гена MBL2 в коренных популяциях территорий Арктической зоны Российской Федерации отсутствуют. Цель исследования – изучение частоты и этнической специфики распределения аллельных вариантов полиморфизмов гена MBL2 rs11003125, rs7096206, rs7095891, rs5030737, rs1800450 и
rs1800451 и их гаплотипов в популяциях Таймырского Долгано-Ненецкого района Красноярского края (ненцы, долганы-нганасаны, русские). В настоящем исследовании нами впервые получены данные о частотах генотипов и гаплотипов гена MBL2 у коренных народностей, проживающих на территориях Арктической зоны
Российской Федерации. Частота встречаемости гаплотипа HYPA, ассоциированного с высокой концентрацией
MBL, составила 35.4 % для русских новорожденных Восточной Сибири, что соответствует частотам европейских популяций (27–33 %). У новорожденных арктических популяций частота гаплотипа HYPA была статистически значимо выше, чем у русских, и составила 64 % для ненцев и 56 % для долган-нганасан, что приближается к
значениям частот, выявленных для эскимосов и североамериканских индейцев (64–81 %). Популяции ненцев и
долган-нганасан демонстрируют существенно более низкие частоты MBL-дефицитных гаплотипов в сравнении
с европеоидами Восточной Сибири (3.9, 6.4 и 21.3 % соответственно). Мы предполагаем, что изолированные
арктические популяции исторически позже столкнулись с некоторыми внутриклеточными инфекциями (туберкулезом, лепрой) и, в отличие от европеоидных популяций, сохранили сформированную на ранних этапах
эволюции человека высокую активность лектинового пути активации комплемента.
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Affiliation(s)
- S. Yu. Tereshchenko
- Scientific Research Institute of Medical Problems of the North, Federal Research Center ”Krasnoyarsk Science Center“ of the Siberian Branch of the Russian Academy of Sciences
| | - M. V. Smolnikova
- Scientific Research Institute of Medical Problems of the North, Federal Research Center ”Krasnoyarsk Science Center“ of the Siberian Branch of the Russian Academy of Sciences
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Smole U, Kratzer B, Pickl WF. Soluble pattern recognition molecules: Guardians and regulators of homeostasis at airway mucosal surfaces. Eur J Immunol 2020; 50:624-642. [PMID: 32246830 PMCID: PMC7216992 DOI: 10.1002/eji.201847811] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 02/25/2020] [Accepted: 03/31/2020] [Indexed: 01/08/2023]
Abstract
Maintenance of homeostasis at body barriers that are constantly challenged by microbes, toxins and potentially bioactive (macro)molecules requires complex, highly orchestrated mechanisms of protection. Recent discoveries in respiratory research have shed light on the unprecedented role of airway epithelial cells (AEC), which, besides immune cells homing to the lung, also significantly contribute to host defence by expressing membrane‐bound and soluble pattern recognition receptors (sPRR). Recent evidence suggests that distinct, evolutionary ancient, sPRR secreted by AEC might become activated by usually innocuous proteins, commonly referred to as allergens. We here provide a systematic overview on sPRR detectable in the mucus lining of AEC. Some of them become actively produced and secreted by AECs (like the pentraxins C‐reactive protein and pentraxin 3; the collectins mannose binding protein and surfactant proteins A and D; H‐ficolin; serum amyloid A; and the complement components C3 and C5). Others are elaborated by innate and adaptive immune cells such as monocytes/macrophages and T cells (like the pentraxins C‐reactive protein and pentraxin 3; L‐ficolin; serum amyloid A; and the complement components C3 and C5). Herein we discuss how sPRRs may contribute to homeostasis but sometimes also to overt disease (e.g. airway hyperreactivity and asthma) at the alveolar–air interface.
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Affiliation(s)
- Ursula Smole
- Institute of ImmunologyCenter for PathophysiologyInfectiology and ImmunologyMedical University of ViennaViennaAustria
| | - Bernhard Kratzer
- Institute of ImmunologyCenter for PathophysiologyInfectiology and ImmunologyMedical University of ViennaViennaAustria
| | - Winfried F. Pickl
- Institute of ImmunologyCenter for PathophysiologyInfectiology and ImmunologyMedical University of ViennaViennaAustria
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Yasmeen F, Seo H, Javaid N, Kim MS, Choi S. Therapeutic Interventions into Innate Immune Diseases by Means of Aptamers. Pharmaceutics 2020; 12:pharmaceutics12100955. [PMID: 33050544 PMCID: PMC7600108 DOI: 10.3390/pharmaceutics12100955] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/03/2020] [Accepted: 10/04/2020] [Indexed: 12/25/2022] Open
Abstract
The immune system plays a crucial role in the body's defense system against various pathogens, such as bacteria, viruses, and parasites, as well as recognizes non-self- and self-molecules. The innate immune system is composed of special receptors known as pattern recognition receptors, which play a crucial role in the identification of pathogen-associated molecular patterns from diverse microorganisms. Any disequilibrium in the activation of a particular pattern recognition receptor leads to various inflammatory, autoimmune, or immunodeficiency diseases. Aptamers are short single-stranded deoxyribonucleic acid or ribonucleic acid molecules, also termed "chemical antibodies," which have tremendous specificity and affinity for their target molecules. Their features, such as stability, low immunogenicity, ease of manufacturing, and facile screening against a target, make them preferable as therapeutics. Immune-system-targeting aptamers have a great potential as a targeted therapeutic strategy against immune diseases. This review summarizes components of the innate immune system, aptamer production, pharmacokinetic characteristics of aptamers, and aptamers related to innate-immune-system diseases.
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Tereshchenko SY, Smolnikova MV, Freidin MB. Mannose-binding lectin gene polymorphisms in the East Siberia and Russian Arctic populations. Immunogenetics 2020; 72:347-54. [PMID: 32813045 DOI: 10.1007/s00251-020-01175-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/11/2020] [Indexed: 01/09/2023]
Abstract
Mannose-binding lectin (MBL) encoded by MBL2 gene is a protein with the ability to form carbohydrate complexes with microbial wall promoting their subsequent elimination. Genetically determined levels of MBL can modify the risk and clinical characteristics of many infectious diseases. The frequency of MBL2 genotypes exhibits significant population differences. The data on the distribution of MBL2 genotypes among the aborigines of the Russian Arctic territories have not yet been published. A total of 880 specimens of dried blood spots of the newborns were genotyped. The newborns represented four populations: Nenets, Dolgan-Nganasans, Mixed aboriginal population, and Russians (Caucasians, Krasnoyarsk). Six polymorphisms of the MBL2 gene were studied: rs11003125, rs7096206, rs7095891, rs5030737, rs1800450, and rs1800451. The frequency of the combined rare O allele (composed of the coding region variants rs5030737, rs1800450, and rs1800451) in the homozygous state was significantly higher in Russians: 10% vs 2% in Nenets and 1% in Dolgan-Nganosans (p < 0.001 for Russians vs other populations). The frequency of the high-producing haplotype (HYPA) was 35.4% in the Russian newborns, in keeping with European populations (27-33%); 64% for Nenets and 56% for Dolgan-Nganasans, similar to the estimates obtained for Eskimos and North Amerinds (64-81%). Our study results are in line with the hypothesis that human evolution has been moving in the direction of accumulation of the genotypes associated with low activity of the lectin complement activation pathway because of the prevalence of some intracellular infections such as tuberculosis, whereby low MBL activity may have a protective effect.
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Babaha F, Abolhassani H, Hamidi Esfahani Z, Yazdani R, Aghamohammadi A. A new case of congenital ficolin-3 deficiency with primary immunodeficiency. Expert Rev Clin Immunol 2020; 16:733-738. [DOI: 10.1080/1744666x.2020.1792779] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Fateme Babaha
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
- Research Center for Immunodeficiencies, Children’s Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hassan Abolhassani
- Research Center for Primary Immunodeficiencies, Iran University of Medical Sciences, Tehran, Iran
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Zahra Hamidi Esfahani
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
- Research Center for Immunodeficiencies, Children’s Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Yazdani
- Research Center for Immunodeficiencies, Children’s Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Asghar Aghamohammadi
- Research Center for Immunodeficiencies, Children’s Medical Center, Tehran University of Medical Sciences, Tehran, Iran
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Miles AM, Huson HJ. Time- and population-dependent genetic patterns underlie bovine milk somatic cell count. J Dairy Sci 2020; 103:8292-8304. [PMID: 32622601 DOI: 10.3168/jds.2020-18322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/21/2020] [Indexed: 12/13/2022]
Abstract
The objective of this study was to determine whether genetic regulation of bovine milk somatic cell count (SCC) varied throughout the course of an individual lactation and to identify quantitative trait loci (QTL) that may differentiate populations of chronically mastitic and robustly healthy cows. Milk SCC has long been a proxy for clinical mastitis diagnosis in management and genetic improvement strategies to control the disease. Cows (n = 471) were genotyped on the Illumina BovineHD 777K BeadChip (Illumina Inc., San Diego, CA), and composite milk samples were collected for SCC at 0-1 d in milk (DIM), 3-5 DIM, 10-14 DIM, 90-110 DIM, and 210-230 DIM, with each time span representing key physiological transitions for the cow. Median lactation somatic cell score (SCS) and area under the SCS curve were calculated from farm test data. A total of 8 genome-wide associations were performed and 167 SNP spanning the genome were significantly associated (false discovery rate <0.05). Of these associated regions, 27 of 48 associated QTL were novel for clinical mastitis or SCC. The linkage disequilibrium block surrounding the associated QTL or a 1-Mb window in the absence of linkage disequilibrium was interrogated for candidate genes, and many of those identified were related to multiple arms of the immune system, including toll-like receptor signaling, macrophage activation, B-cell maturation, T-cell recruitment, and the complement pathway. These genes included EXOC4, BAMBI, ITSN2, IL34, FCN3, CD8A, and CD8B. In addition, we identified populations of robustly healthy (SCS ≤4 from 10-14 DIM until study end), chronically mastitic (SCS >4 from 10-14 DIM until study end), and average cows with fluctuating SCS, and calculated fixation indices to identify regions of the genome differentiating these 3 populations. A total of 12 SNP were identified that showed moderate allelic differentiation (Wright's F statistic, FST ≥ 0.4) between the "chronic," "healthy," and "average" populations of cows. Candidate genes in the region surrounding differentiated QTL were related to cell signaling and immune response, such as JAKMIP1 and MADCAM1. The wide range of significantly associated QTL spanning the genome and the diversity of gene functions reinforces that mastitis is a complex trait and suggests that selection based on lactation stage-specific SCS rather than a generalized score may lead to greater success in breeding mastitis-resistant cows.
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Affiliation(s)
- Asha M Miles
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - Heather J Huson
- Department of Animal Science, Cornell University, Ithaca, NY 14853.
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Gondaira S, Nishi K, Tanaka T, Yamamoto T, Nebu T, Watanabe R, Konnai S, Hayashi T, Kiku Y, Okamoto M, Matsuda K, Koiwa M, Iwano H, Nagahata H, Higuchi H. Immunosuppression in Cows following Intramammary Infusion of Mycoplasma bovis. Infect Immun 2020; 88:e00521-19. [PMID: 31843962 DOI: 10.1128/IAI.00521-19] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 12/06/2019] [Indexed: 01/14/2023] Open
Abstract
Mycoplasma bovis is a destructive pathogen that causes large economic losses in rearing cattle for beef and dairy worldwide. M. bovis causes suppression of and evades the host immune response; however, the mechanisms of host immune function involved in M. bovis mastitis have not been elucidated. The purpose of this study was to elucidate the characteristics of the bovine immune response to mycoplasmal mastitis. We evaluated the responsiveness of the bovine mammary gland following infusion of M. bovis Somatic cell counts and bacterial counts in milk from the infected quarter were increased. However, the proliferation of peripheral blood mononuclear cells (blood MNCs) and mononuclear cells isolated from M. bovis-stimulated mammary lymph nodes (lymph node MNCs) did not differ from that in the unstimulated cells. Transcriptome analysis revealed that the mRNA levels of innate immune system-related genes in blood MNCs, complement factor D (CFD), ficolin 1 (FCN1), and tumor necrosis factor superfamily member 13 (TNFSF13) decreased following intramammary infusion of M. bovis The mRNA levels of immune exhaustion-related genes, programmed cell death 1 (PD-1), programmed cell death-ligand 1 (PD-L1), lymphocyte activation gene 3 (LAG3), and cytotoxic T-lymphocyte-associated protein 4 (CTLA4) of milk mononuclear cells (milk MNCs) in the infected quarter were increased compared with those before infusion. Increase in immune exhaustion-related gene expression and decrease in innate immune response-related genes of MNCs in quarters from cows were newly characterized by M. bovis-induced mastitis. These results suggested that M. bovis-induced mastitis affected the immune function of bovine MNCs, which is associated with prolonged duration of infection with M. bovis.
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Snipsøyr MG, Wiggers H, Ludvigsen M, Stensballe A, Vorum H, Poulsen SH, Rasmussen LM, Petersen E, Honoré B. Towards identification of novel putative biomarkers for infective endocarditis by serum proteomic analysis. Int J Infect Dis 2020; 96:73-81. [PMID: 32087365 DOI: 10.1016/j.ijid.2020.02.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 02/13/2020] [Accepted: 02/14/2020] [Indexed: 01/15/2023] Open
Abstract
INTRODUCTION Infective endocarditis (IE) has high mortality, partly due to delayed diagnosis. No biomarker can identify IE in patients with fever and clinical picture of infection. To find putative biomarkers we analyzed serum levels of two proteins found in cardiac valves, fibulin-1 (n=696) and osteoprotegerin (n=689) among patients on clinical suspicion of IE. Proteomic analyses were performed in 24 patients with bacteremia, 12 patients with definite IE and 12 patients with excluded IE. METHODS Fibulin-1 and osteoprotegerin were studied by enzyme linked immunosorbent assay (ELISA). Proteomic analyses were conducted by 2-dimensional polyacrylamid gel electrophoresis (2D-PAGE) and label-free quantitative liquid chromatography - tandem mass spectrometry (LFQ LC-MS/MS). Controls for 2D 2D-PAGE and LFQ LC-MS/MS had bacteremia and excluded IE. RESULTS Osteoprotegerin levels were significantly increased in IE patients compared with non-IE patients. Fibulin-1 showed no difference. 2D-PAGE showed significant differences of 6 proteoforms: haptoglobin, haptoglobin-related protein, α-2-macroglobulin, apolipoprotein A-I and ficolin-3. LFQ LC-MS/MS analysis revealed significant level changes of 7 proteins: apolipoprotein L1, complement C1q subcomponent B and C, leukocyte immunoglobulin-like receptor subfamily A member 3, neuropilin-2, multimerin-1 and adiponectin. CONCLUSIONS The concentration changes in a set of proteoforms/proteins suggest that stress and inflammation responses are perturbed in patients with IE compared to patients with bacteremia without IE.
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Affiliation(s)
- Magnus Giske Snipsøyr
- Department of Biomedicine, Aarhus University, Aarhus, Denmark; Department of Cardiology, Aarhus University Hospital, Skejby, Denmark; Department of Infectious Diseases, Aarhus University Hospital, Skejby, Denmark
| | - Henrik Wiggers
- Department of Cardiology, Aarhus University Hospital, Skejby, Denmark
| | - Maja Ludvigsen
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Allan Stensballe
- Department of Health Science and Technology, Aalborg University, Denmark
| | - Henrik Vorum
- Department of Clinical Medicine, Aalborg University, Denmark
| | | | - Lars Melholt Rasmussen
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - Eskild Petersen
- Department of Infectious Diseases, Aarhus University Hospital, Skejby, Denmark
| | - Bent Honoré
- Department of Biomedicine, Aarhus University, Aarhus, Denmark; Department of Clinical Medicine, Aalborg University, Denmark.
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Tarradas J, Tous N, Esteve-Garcia E, Brufau AJ. The Control of Intestinal Inflammation: A Major Objective in the Research of Probiotic Strains as Alternatives to Antibiotic Growth Promoters in Poultry. Microorganisms 2020; 8:E148. [PMID: 31973199 DOI: 10.3390/microorganisms8020148] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/17/2020] [Accepted: 01/18/2020] [Indexed: 12/31/2022] Open
Abstract
The reduction of antimicrobial resistance is a major challenge for the scientific community. In a few decades, infections by resistant bacteria are forecasted to be the main cause of death in the world. The withdrawal of antibiotics as growth promoters and their preventive use in animal production is essential to avoid these resistances, but this may impair productivity and health due to the increase in gut inflammation. This reduction in productivity aggravates the problem of increasing meat demand in developing countries and limits the availability of raw materials. Probiotics are promising products to address this challenge due to their beneficial effects on microbiota composition, mucosal barrier integrity, and immune system to control inflammation. Although many modes of action have been demonstrated, the scientific community is not able to describe the specific effects that a probiotic should induce on the host to maximize both productivity and animal health. First, it may be necessary to define what are the innate immune pathways acting in the gut that optimize productivity and health and to then investigate which probiotic strain is able to induce the specific effect needed. This review describes several gaps in the knowledge of host-microbiota-pathogen interaction and the related mechanisms involved in the inflammatory response not demonstrated yet in poultry.
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Villaseñor-Altamirano AB, Moretto M, Maldonado M, Zayas-Del Moral A, Munguía-Reyes A, Romero Y, García-Sotelo JS, Aguilar LA, Aldana-Assad O, Engelen K, Selman M, Collado-Vides J, Balderas-Martínez YI, Medina-Rivera A. PulmonDB: a curated lung disease gene expression database. Sci Rep 2020; 10:514. [PMID: 31949184 DOI: 10.1038/s41598-019-56339-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 12/05/2019] [Indexed: 12/12/2022] Open
Abstract
Chronic Obstructive Pulmonary Disease (COPD) and Idiopathic Pulmonary Fibrosis (IPF) have contrasting clinical and pathological characteristics and interesting whole-genome transcriptomic profiles. However, data from public repositories are difficult to reprocess and reanalyze. Here, we present PulmonDB, a web-based database (http://pulmondb.liigh.unam.mx/) and R library that facilitates exploration of gene expression profiles for these diseases by integrating transcriptomic data and curated annotation from different sources. We demonstrated the value of this resource by presenting the expression of already well-known genes of COPD and IPF across multiple experiments and the results of two differential expression analyses in which we successfully identified differences and similarities. With this first version of PulmonDB, we create a new hypothesis and compare the two diseases from a transcriptomics perspective.
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Abstract
Aims: Ficolin-3 is a circulating pattern recognition molecule of the lectin pathway, which participates in the host immune responses to cancer. Our study aimed to evaluate the prognostic efficacy of ficolin-3 in patients with esophageal cancer (EC). Methods: A total of 233 patients with EC were recruited for this study during a period from March 2013 to March 2016. Clinical information and pretherapeutic tumor specimens from all of the patients were analyzed. Serum ficolin-3 levels were determined by enzyme-linked immunosorbent assay. Patients were then assigned into quartiles according to their serum ficolin-3 levels. The Cox proportional hazards model was utilized to explore the correlation between ficolin-3 levels with overall survival (OS) and disease-specific survival (DSS). Results: The serum ficolin-3 level in the esophageal squamous cell carcinoma (ESCC) group was significantly higher than in the esophageal adenocarcinoma (EAC) group (19.59 ± 4.35 ng/mL vs. 18.39 ± 5.42 ng/mL, p < 0.01). There were great differences in prevalence of ESCC, tumor length, involvement of adventitia, and lymph node status among patients in different ficolin-3 groups (all p < 0.01). Both univariate analyses and further multivariate analyses revealed the close association between ficolin-3 levels and EAC (For OS and DSS, all p < 0.05). Out of 233 patients, survival information was available for 220, including 100 (45.45%) females and 120 (54.54%) males. When dividing the ficolin-3 levels into quartiles, patients with higher serum ficolin-3 levels showed a trend toward longer OS and DSS no matter whether they were diagnosed as ESCC or EAC (HR 0.21-0.55, all p < 0.05). Conclusions: Serum ficolin-3 levels were identified as an independent prognostic biomarker for DSS and OS in Chinese patients with EC, especially EAC.
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Affiliation(s)
- Qingquan Li
- Department of Medical Oncology, People's Hospital of Xixian, Xinyang, P.R. China
| | - Yurong Lin
- Department of Medical Oncology, People's Hospital of Xixian, Xinyang, P.R. China
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Solomon T, Lapek JD, Jensen SB, Greenwald WW, Hindberg K, Matsui H, Latysheva N, Braekken SK, Gonzalez DJ, Frazer KA, Smith EN, Hansen JB. Identification of Common and Rare Genetic Variation Associated With Plasma Protein Levels Using Whole-Exome Sequencing and Mass Spectrometry. Circ Genom Precis Med 2019; 11:e002170. [PMID: 30562114 DOI: 10.1161/circgen.118.002170] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Identifying genetic variation associated with plasma protein levels, and the mechanisms by which they act, could provide insight into alterable processes involved in regulation of protein levels. Although protein levels can be affected by genetic variants, their estimation can also be biased by missense variants in coding exons causing technical artifacts. Integrating genome sequence genotype data with mass spectrometry-based protein level estimation could reduce bias, thereby improving detection of variation that affects RNA or protein metabolism. METHODS Here, we integrate the blood plasma protein levels of 664 proteins from 165 participants of the Tromsø Study, measured via tandem mass tag mass spectrometry, with whole-exome sequencing data to identify common and rare genetic variation associated with peptide and protein levels (protein quantitative trait loci [pQTLs]). We additionally use literature and database searches to prioritize putative functional variants for each pQTL. RESULTS We identify 109 independent associations (36 protein and 73 peptide) and use genotype data to exclude 49 (4 protein and 45 peptide) as technical artifacts. We describe 2 particular cases of rare variation: 1 associated with the complement pathway and 1 with platelet degranulation. We identify putative functional variants and show that pQTLs act through diverse molecular mechanisms that affect both RNA and protein metabolism. CONCLUSIONS We show that although the majority of pQTLs exert their effects by modulating RNA metabolism, many affect protein levels directly. Our work demonstrates the extent by which pQTL studies are affected by technical artifacts and highlights how prioritizing the functional variant in pQTL studies can lead to insights into the molecular steps by which a protein may be regulated.
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Affiliation(s)
- Terry Solomon
- Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla (T.S.)
| | - John D Lapek
- Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla (J.D.L., D.J.G.)
| | - Søren Beck Jensen
- Department of Clinical Medicine, K.G. Jebsen Thrombosis Research and Expertise Center, UiT-The Arctic University of Norway (S.B.J., K.H., N.L., S.K.B., K.A.F., E.N.S., J.-B.H.)
| | - William W Greenwald
- Bioinformatics and Systems Biology Graduate Program, University of California, San Diego, La Jolla (W.W.G.)
| | - Kristian Hindberg
- Department of Clinical Medicine, K.G. Jebsen Thrombosis Research and Expertise Center, UiT-The Arctic University of Norway (S.B.J., K.H., N.L., S.K.B., K.A.F., E.N.S., J.-B.H.)
| | - Hiroko Matsui
- Institue of Genomic Medicine, University of California, San Diego, La Jolla (H.M., K.A.F.)
| | - Nadezhda Latysheva
- Department of Clinical Medicine, K.G. Jebsen Thrombosis Research and Expertise Center, UiT-The Arctic University of Norway (S.B.J., K.H., N.L., S.K.B., K.A.F., E.N.S., J.-B.H.)
| | - Sigrid K Braekken
- Department of Clinical Medicine, K.G. Jebsen Thrombosis Research and Expertise Center, UiT-The Arctic University of Norway (S.B.J., K.H., N.L., S.K.B., K.A.F., E.N.S., J.-B.H.).,Division of Internal Medicine, University Hospital of North Norway, Tromsû (S.K.B., J.-B.H.)
| | - David J Gonzalez
- Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla (J.D.L., D.J.G.)
| | - Kelly A Frazer
- Institue of Genomic Medicine, University of California, San Diego, La Jolla (H.M., K.A.F.).,Department of Pediatrics, Rady Children's Hospital, University of California, San Diego, La Jolla (K.A.F., E.N.S.).,Department of Clinical Medicine, K.G. Jebsen Thrombosis Research and Expertise Center, UiT-The Arctic University of Norway (S.B.J., K.H., N.L., S.K.B., K.A.F., E.N.S., J.-B.H.)
| | - Erin N Smith
- Department of Pediatrics, Rady Children's Hospital, University of California, San Diego, La Jolla (K.A.F., E.N.S.).,Department of Clinical Medicine, K.G. Jebsen Thrombosis Research and Expertise Center, UiT-The Arctic University of Norway (S.B.J., K.H., N.L., S.K.B., K.A.F., E.N.S., J.-B.H.)
| | - John-Bjarne Hansen
- Department of Clinical Medicine, K.G. Jebsen Thrombosis Research and Expertise Center, UiT-The Arctic University of Norway (S.B.J., K.H., N.L., S.K.B., K.A.F., E.N.S., J.-B.H.).,Division of Internal Medicine, University Hospital of North Norway, Tromsû (S.K.B., J.-B.H.)
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Mateo M, Reynard S, Carnec X, Journeaux A, Baillet N, Schaeffer J, Picard C, Legras-Lachuer C, Allan R, Perthame E, Hillion KH, Pietrosemoli N, Dillies MA, Barrot L, Vallve A, Barron S, Fellmann L, Gaillard JC, Armengaud J, Carbonnelle C, Raoul H, Tangy F, Baize S. Vaccines inducing immunity to Lassa virus glycoprotein and nucleoprotein protect macaques after a single shot. Sci Transl Med 2019; 11:11/512/eaaw3163. [DOI: 10.1126/scitranslmed.aaw3163] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 04/16/2019] [Accepted: 08/02/2019] [Indexed: 01/01/2023]
Abstract
Lassa fever is a major threat in Western Africa. The large number of people living at risk for this disease calls for the development of a vaccine against Lassa virus (LASV). We generated live-attenuated LASV vaccines based on measles virus and Mopeia virus platforms and expressing different LASV antigens, with the aim to develop a vaccine able to protect after a single shot. We compared the efficacy of these vaccines against LASV in cynomolgus monkeys. The vaccines were well tolerated and protected the animals from LASV infection and disease after a single immunization but with varying efficacy. Analysis of the immune responses showed that complete protection was associated with robust secondary T cell and antibody responses against LASV. Transcriptomic and proteomic analyses showed an early activation of innate immunity and T cell priming after immunization with the most effective vaccines, with changes detectable as early as 2 days after immunization. The most efficacious vaccine candidate, a measles vector simultaneously expressing LASV glycoprotein and nucleoprotein, has been selected for further clinical evaluation.
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Araújo-Gomes N, Romero-Gavilán F, Zhang Y, Martinez-Ramos C, Elortza F, Azkargorta M, Martín de Llano J, Gurruchaga M, Goñi I, van den Beucken J, Suay J. Complement proteins regulating macrophage polarisation on biomaterials. Colloids Surf B Biointerfaces 2019; 181:125-133. [DOI: 10.1016/j.colsurfb.2019.05.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 05/06/2019] [Accepted: 05/16/2019] [Indexed: 01/06/2023]
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Abstract
The complement is the first line of immune defense system involved in elimination of invading pathogens and dying host cells. Its activation is mainly triggered by immune complexes or pattern recognition molecules (PRMs) upon recognition against non-self or altered self-cells, such as C1q, collectins, ficolins, and properdin. Recent findings have interestingly shown that the pentraxins (C-reactive protein, CRP; serum-amyloid P component, SAP; long pentraxin 3, PTX3) are involved in complement activation and amplification via communication with complement initiation PRMs, but also complement regulation via recruitment of complement regulators, for instance C4b binding protein (C4BP) and factor H (fH). This review addresses the potential roles of the pentraxins in the complement system during infection and inflammation, and emphasizes the underlining implications of the pentraxins in the context of complement activation and regulation both under physiological and pathological conditions.
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Affiliation(s)
- Ying Jie Ma
- The Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Peter Garred
- The Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Fausto DA, Ferraz ALJ, Delgado EF, Andrade SCS, Coutinho LL, Feijó GLD. Transcriptome changes in muscle of Nellore cows submitted to recovery weight gain under grazing condition. Animal 2019; 13:333-40. [PMID: 29983126 DOI: 10.1017/S1751731118001490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The aim of this study was to evaluate transcriptome changes in the muscle tissue of Bos taurus indicus cull cows subjected to recovery weight gain under grazing conditions. In all, 38 Nellore cull cows were divided randomly into two different management groups: (1) Maintenance (MA) and (2) Recovery gain (RG) from weight loss by moderate growth under high forage availability. After slaughter, RNA analysis was performed on the Longissimus thoracis muscle. Semaphorin 4A, solute carrier family 11 member 1, and Ficolin-2 were expressed in the RG, which may indicate an inflammatory response during tissue regrowth. Signaling factors, such as Myostatin, related to fibroblast activation, negative control of satellite cell proliferation in adults and muscle protein synthesis were less abundant in the RG group. The only gene related to anabolic processes that were more abundant in the MA group was related to fat deposition. The genes that were differentially expressed in the experiment showed muscle repair-related changes during RG based on the greater expression of genes involved in inflammatory responses and the lower expression of negative regulators of muscle cell proliferation and hypertrophy.
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Orrem HL, Nilsson PH, Pischke SE, Grindheim G, Garred P, Seljeflot I, Husebye T, Aukrust P, Yndestad A, Andersen GØ, Barratt‐Due A, Mollnes TE. Acute heart failure following myocardial infarction: complement activation correlates with the severity of heart failure in patients developing cardiogenic shock. ESC Heart Fail 2018; 5:292-301. [PMID: 29424484 PMCID: PMC5933968 DOI: 10.1002/ehf2.12266] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 12/22/2017] [Indexed: 02/06/2023] Open
Abstract
AIMS Heart failure (HF) is an impending complication to myocardial infarction. We hypothesized that the degree of complement activation reflects severity of HF following acute myocardial infarction. METHODS AND RESULTS The LEAF trial (LEvosimendan in Acute heart Failure following myocardial infarction) evaluating 61 patients developing HF within 48 h after percutaneous coronary intervention-treated ST-elevation myocardial infarction herein underwent a post hoc analysis. Blood samples were drawn from inclusion to Day 5 and at 42 day follow-up, and biomarkers were measured with enzyme immunoassays. Regional myocardial contractility was measured by echocardiography as wall motion score index (WMSI). The cardiogenic shock group (n = 9) was compared with the non-shock group (n = 52). Controls (n = 44) were age-matched and sex-matched healthy individuals. C4bc, C3bc, C3bBbP, and sC5b-9 were elevated in patients at inclusion compared with controls (P < 0.01). The shock group had higher levels compared with the non-shock group for all activation products except C3bBbP (P < 0.05). At Day 42, all products were higher in the shock group (P < 0.05). In the shock group, sC5b-9 correlated significantly with WMSI at baseline (r = 0.68; P = 0.045) and at Day 42 (r = 0.84; P = 0.036). Peak sC5b-9 level correlated strongly with WMSI at Day 42 (r = 0.98; P = 0.005). Circulating endothelial cell activation markers sICAM-1 and sVCAM-1 were higher in the shock group during the acute phase (P < 0.01), and their peak levels correlated with sC5b-9 peak level in the whole HF population (r = 0.32; P = 0.014 and r = 0.30; P = 0.022, respectively). CONCLUSIONS Complement activation discriminated cardiogenic shock from non-shock in acute ST-elevation myocardial infarction complicated by HF and correlated with regional contractility and endothelial cell activation, suggesting a pathogenic role of complement in this condition.
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Affiliation(s)
- Hilde L. Orrem
- Department of ImmunologyOslo University Hospital, RikshospitaletOsloNorway
| | - Per H. Nilsson
- Department of ImmunologyOslo University Hospital, RikshospitaletOsloNorway
- K.G. Jebsen Inflammatory Research CentreUniversity of OsloOsloNorway
- Linnaeus Centre for Biomaterials ChemistryLinnaeus UniversityKalmarSweden
| | - Søren E. Pischke
- Department of ImmunologyOslo University Hospital, RikshospitaletOsloNorway
- Division of Emergencies and Critical Care, Department of Anesthesiology, RikshospitaletOslo University HospitalOsloNorway
| | - Guro Grindheim
- Division of Emergencies and Critical Care, Department of Anesthesiology, RikshospitaletOslo University HospitalOsloNorway
| | - Peter Garred
- Laboratory of Molecular Medicine, Department of Clinical Immunology, Rigshospitalet, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Ingebjørg Seljeflot
- Center for Clinical Heart ResearchOslo University Hospital, UllevålOsloNorway
- Department of CardiologyOslo University Hospital, UllevålOsloNorway
- Institute of Clinical Medicine, Faculty of MedicineUniversity of OsloOsloNorway
| | - Trygve Husebye
- Department of CardiologyOslo University Hospital, UllevålOsloNorway
- Institute of Clinical Medicine, Faculty of MedicineUniversity of OsloOsloNorway
- Center of Heart Failure ResearchUniversity of OsloOsloNorway
| | - Pål Aukrust
- K.G. Jebsen Inflammatory Research CentreUniversity of OsloOsloNorway
- Research Institute of Internal MedicineOslo University HospitalOsloNorway
- Section of Clinical Immunology and Infectious DiseasesOslo University HospitalOsloNorway
- Institute of Clinical Medicine, Faculty of MedicineUniversity of OsloOsloNorway
| | - Arne Yndestad
- K.G. Jebsen Inflammatory Research CentreUniversity of OsloOsloNorway
- Research Institute of Internal MedicineOslo University HospitalOsloNorway
- Institute of Clinical Medicine, Faculty of MedicineUniversity of OsloOsloNorway
- Center of Heart Failure ResearchUniversity of OsloOsloNorway
| | - Geir Ø. Andersen
- Center for Clinical Heart ResearchOslo University Hospital, UllevålOsloNorway
- Department of CardiologyOslo University Hospital, UllevålOsloNorway
- Center of Heart Failure ResearchUniversity of OsloOsloNorway
| | - Andreas Barratt‐Due
- Department of ImmunologyOslo University Hospital, RikshospitaletOsloNorway
- Division of Emergencies and Critical Care, Department of Anesthesiology, RikshospitaletOslo University HospitalOsloNorway
| | - Tom E. Mollnes
- Department of ImmunologyOslo University Hospital, RikshospitaletOsloNorway
- K.G. Jebsen Inflammatory Research CentreUniversity of OsloOsloNorway
- Institute of Clinical Medicine, Faculty of MedicineUniversity of OsloOsloNorway
- Research Laboratory Nordland Hospital, Bodø and K.G. Jebsen TRECUniversity of TromsøTromsøNorway
- Centre of Molecular Inflammation ResearchNorwegian University of Science and TechnologyTrondheimNorway
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Dicker AJ, Crichton ML, Cassidy AJ, Brady G, Hapca A, Tavendale R, Einarsson GG, Furrie E, Elborn JS, Schembri S, Marshall SE, Palmer CNA, Chalmers JD. Genetic mannose binding lectin deficiency is associated with airway microbiota diversity and reduced exacerbation frequency in COPD. Thorax 2018; 73:510-518. [PMID: 29101284 PMCID: PMC5969339 DOI: 10.1136/thoraxjnl-2016-209931] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 08/19/2017] [Accepted: 10/02/2017] [Indexed: 01/23/2023]
Abstract
BACKGROUND In cystic fibrosis and bronchiectasis, genetic mannose binding lectin (MBL) deficiency is associated with increased exacerbations and earlier mortality; associations in COPD are less clear. Preclinical data suggest MBL interferes with phagocytosis of Haemophilus influenzae, a key COPD pathogen. We investigated whether MBL deficiency impacted on clinical outcomes or microbiota composition in COPD. METHODS Patients with COPD (n=1796) underwent MBL genotyping; linkage to health records identified exacerbations, lung function decline and mortality. A nested subcohort of 141 patients, followed for up to 6 months, was studied to test if MBL deficiency was associated with altered sputum microbiota, through 16S rRNA PCR and sequencing, or airway inflammation during stable and exacerbated COPD. FINDINGS Patients with MBL deficiency with COPD were significantly less likely to have severe exacerbations (incidence rate ratio (IRR) 0.66, 95% CI 0.48 to 0.90, p=0.009), or to have moderate or severe exacerbations (IRR 0.77, 95% CI 0.60 to 0.99, p=0.047). MBL deficiency did not affect rate of FEV1 decline or mortality. In the subcohort, patients with MBL deficiency had a more diverse lung microbiota (p=0.008), and were less likely to be colonised with Haemophilus spp. There were lower levels of airway inflammation in patients with MBL deficiency. INTERPRETATION Patients with MBL deficient genotype with COPD have a lower risk of exacerbations and a more diverse lung microbiota. This is the first study to identify a genetic association with the lung microbiota in COPD.
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Affiliation(s)
- Alison J Dicker
- Scottish Centre for Respiratory Research, School of Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | - Megan L Crichton
- Scottish Centre for Respiratory Research, School of Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | - Andrew J Cassidy
- Scottish Centre for Respiratory Research, School of Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | - Gill Brady
- Tayside Respiratory Research Group, Clinical Research Centre, Dundee, UK
| | - Adrian Hapca
- Dundee Epidemiology and Biostatistics Unit, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | - Roger Tavendale
- Pat MacPherson Centre for Pharmacogenetics and Pharmacogenomics, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | - Gisli G Einarsson
- School of Medicine, Centre for Experimental Medicine, Dentistry and Biomedical Sciences, Queen's University, Belfast, UK
| | - Elizabeth Furrie
- Department of Immunology, NHS Tayside, Ninewells Hospital Department of Medicine, Dundee, Dundee, UK
| | - J Stuart Elborn
- School of Medicine, Centre for Experimental Medicine, Dentistry and Biomedical Sciences, Queen's University, Belfast, UK
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Stuart Schembri
- Scottish Centre for Respiratory Research, School of Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | - Sara E Marshall
- Scottish Centre for Respiratory Research, School of Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | - Colin N A Palmer
- Pat MacPherson Centre for Pharmacogenetics and Pharmacogenomics, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | - James D Chalmers
- Scottish Centre for Respiratory Research, School of Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
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Banda NK, Acharya S, Scheinman RI, Mehta G, Takahashi M, Endo Y, Zhou W, Farrar CA, Sacks SH, Fujita T, Sekine H, Holers VM. Deconstructing the Lectin Pathway in the Pathogenesis of Experimental Inflammatory Arthritis: Essential Role of the Lectin Ficolin B and Mannose-Binding Protein-Associated Serine Protease 2. J Immunol 2017; 199:1835-1845. [PMID: 28739878 PMCID: PMC5568486 DOI: 10.4049/jimmunol.1700119] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 06/23/2017] [Indexed: 12/16/2022]
Abstract
Complement plays an important role in the pathogenesis of rheumatoid arthritis. Although the alternative pathway (AP) is known to play a key pathogenic role in models of rheumatoid arthritis, the importance of the lectin pathway (LP) pattern recognition molecules such as ficolin (FCN) A, FCN B, and collectin (CL)-11, as well as the activating enzyme mannose-binding lectin-associated serine protease-2 (MASP-2), are less well understood. We show in this article that FCN A-/- and CL-11-/- mice are fully susceptible to collagen Ab-induced arthritis (CAIA). In contrast, FCN B-/- and MASP-2-/-/sMAp-/- mice are substantially protected, with clinical disease activity decreased significantly (p < 0.05) by 47 and 70%, respectively. Histopathology scores, C3, factor D, FCN B deposition, and infiltration of synovial macrophages and neutrophils were similarly decreased in FCN B-/- and MASP-2-/-/sMAp-/- mice. Our data support that FCN B plays an important role in the development of CAIA, likely through ligand recognition in the joint and MASP activation, and that MASP-2 also contributes to the development of CAIA, likely in a C4-independent manner. Decreased AP activity in the sera from FCN B-/- and MASP-2-/-/sMAp-/- mice with arthritis on adherent anti-collagen Abs also support the hypothesis that pathogenic Abs, as well as additional inflammation-related ligands, are recognized by the LP and operate in vivo to activate complement. Finally, we also speculate that the residual disease seen in our studies is driven by the AP and/or the C2/C4 bypass pathway via the direct cleavage of C3 through an LP-dependent mechanism.
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Affiliation(s)
- Nirmal K Banda
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045;
| | - Sumitra Acharya
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Robert I Scheinman
- Skaggs School of Pharmacy, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Gaurav Mehta
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Minoru Takahashi
- Department of Immunology, Fukushima Medical University, Fukushima, Hikarigaoka, Japan 960-1295; and
| | - Yuichi Endo
- Department of Immunology, Fukushima Medical University, Fukushima, Hikarigaoka, Japan 960-1295; and
| | - Wuding Zhou
- Medical Research Council Centre for Transplantation, Division of Transplantation Immunology and Mucosal Biology, King's College London, Strand, London SE19 RT, United Kingdom
| | - Conrad A Farrar
- Medical Research Council Centre for Transplantation, Division of Transplantation Immunology and Mucosal Biology, King's College London, Strand, London SE19 RT, United Kingdom
| | - Steven H Sacks
- Medical Research Council Centre for Transplantation, Division of Transplantation Immunology and Mucosal Biology, King's College London, Strand, London SE19 RT, United Kingdom
| | - Teizo Fujita
- Department of Immunology, Fukushima Medical University, Fukushima, Hikarigaoka, Japan 960-1295; and
| | - Hideharu Sekine
- Department of Immunology, Fukushima Medical University, Fukushima, Hikarigaoka, Japan 960-1295; and
| | - V Michael Holers
- Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
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Ma YJ, Lee BL, Garred P. An overview of the synergy and crosstalk between pentraxins and collectins/ficolins: their functional relevance in complement activation. Exp Mol Med 2017; 49:e320. [PMID: 28428631 PMCID: PMC6130212 DOI: 10.1038/emm.2017.51] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 12/30/2016] [Indexed: 02/07/2023] Open
Abstract
The complement system is an innate immune defense machinery comprising components that deploy rapid immune responses and provide efficient protection against foreign invaders and unwanted host elements. The complement system is activated upon recognition of pathogenic microorganisms or altered self-cells by exclusive pattern recognition molecules (PRMs), such as collectins, ficolins and pentraxins. Recent accumulating evidence shows that the different classes of effector PRMs build up a co-operative network and exert synergistic effects on complement activation. In this review, we describe our updated view of the crosstalk between previously unlinked PRMs in complement activation and the potential pathogenic effects during infection and inflammation.
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Affiliation(s)
- Ying Jie Ma
- The Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Bok Luel Lee
- National Research Laboratory of Defense Proteins, College of Pharmacy, Pusan National University, Busan, Korea
| | - Peter Garred
- The Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Abstract
The innate immune system represents the first line of defense against pathogens and comprises both a cellular and a humoral arm. Fluid-phase pattern recognition molecules (PRMs), which include collectins, ficolins, and pentraxins, are key components of the humoral arm of innate immunity and are expressed by a variety of cells, including myeloid, epithelial, and endothelial cells, mainly in response to infectious and inflammatory conditions. Soluble PRMs share basic multifunctional properties including activation and regulation of the complement cascade, opsonization of pathogens and apoptotic cells, regulation of leukocyte extravasation, and fine-tuning of inflammation. Therefore, soluble PRMs are part of the immune response and retain antibody-like effector functions. Here, we will review the expression and general function of soluble PRMs, focusing our attention on the long pentraxin PTX3.
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Anjosa ZPD, Santos MMS, Rodrigues NJ, Lacerda GAND, Araujo J, Silva JDA, Tavares NDAC, Guimarães RL, Crovella S, Brandão LAC. Polymorphism in ficolin-1 (FCN1) gene is associated with an earlier onset of type 1 diabetes mellitus in children and adolescents from northeast Brazil. J Genet 2016; 95:1031-1034. [PMID: 27994205 DOI: 10.1007/s12041-016-0719-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Horváth Z, Csuka D, Vargova K, Leé S, Varga L, Garred P, Préda I, Zsámboki ET, Prohászka Z, Kiss RG. Association of Low Ficolin-Lectin Pathway Parameters with Cardiac Syndrome X. Scand J Immunol 2016; 84:174-81. [PMID: 27312152 DOI: 10.1111/sji.12454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 06/14/2016] [Indexed: 12/13/2022]
Abstract
In patients with typical angina pectoris, inducible myocardial ischaemia and macroscopically normal coronaries (cardiac syndrome X (CSX)), a significantly elevated plasma level of terminal complement complex (TCC), the common end product of complement activation, has been observed without accompanying activation of the classical or the alternative pathways. Therefore, our aim was to clarify the role of the ficolin-lectin pathway in CSX. Eighteen patients with CSX, 37 stable angina patients with significant coronary stenosis (CHD) and 54 healthy volunteers (HC) were enrolled. Serum levels of ficolin-2 and ficolin-3, ficolin-3/MASP-2 complex and ficolin-3-mediated TCC deposition (FCN3-TCC) were determined. Plasma level of TCC was significantly higher in the CSX than in the HC or CHD group (5.45 versus 1.30 versus 2.04 AU/ml, P < 0.001). Serum levels of ficolin-2 and ficolin-3 were significantly lower in the CSX compared to the HC or CHD group (3.60 versus 5.80 or 5.20 μg/ml, P < 0.05; 17.80 versus 24.10 or 26.80 μg/ml, P < 0.05). The ficolin-3/MASP-2 complex was significantly lower in the CSX group compared to the HC group (92.90 versus 144.90 AU/ml, P = 0.006). FCN3-TCC deposition was significantly lower in the CSX group compared to the HC and CHD groups (67.8% versus 143.3% or 159.7%, P < 0.05). In the CSX group, a significant correlation was found between TCC and FCN3-TCC level (r = 0.507, P = 0.032) and between ficolin-3/MASP-2 complex level and FCN3-TCC deposition (r = 0.651, P = 0.003). In conclusion, in patients with typical angina and myocardial ischaemia despite macroscopically normal coronary arteries, low levels of several lectin pathway parameters were observed, indicating complement activation and consumption. Complement activation through the ficolin-lectin pathway might play a role in the complex pathomechanism of CSX.
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Affiliation(s)
- Z Horváth
- Research Group for Inflammation Biology and Immunogenomics of Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
- Department of Cardiology, Hungarian Defence Forces Medical Centre, Budapest, Hungary
| | - D Csuka
- 3rd Department of Internal Medicine, Semmelweis University, Budapest, Hungary
| | - K Vargova
- Department of Cardiology, Hungarian Defence Forces Medical Centre, Budapest, Hungary
| | - S Leé
- Department of Cardiology, Hungarian Defence Forces Medical Centre, Budapest, Hungary
| | - L Varga
- 3rd Department of Internal Medicine, Semmelweis University, Budapest, Hungary
| | - P Garred
- Laboratory of Molecular Medicine, Department of Clinical Immunology Section 7631, Rigshospitalet, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - I Préda
- Research Group for Inflammation Biology and Immunogenomics of Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
- Department of Cardiology, Hungarian Defence Forces Medical Centre, Budapest, Hungary
| | - E T Zsámboki
- Department of Cardiology, Hungarian Defence Forces Medical Centre, Budapest, Hungary
| | - Z Prohászka
- 3rd Department of Internal Medicine, Semmelweis University, Budapest, Hungary
| | - R G Kiss
- Research Group for Inflammation Biology and Immunogenomics of Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
- Department of Cardiology, Hungarian Defence Forces Medical Centre, Budapest, Hungary
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Poppelaars F, Gaya da Costa M, Berger SP, Assa S, Meter-Arkema AH, Daha MR, van Son WJ, Franssen CFM, Seelen MAJ. Strong predictive value of mannose-binding lectin levels for cardiovascular risk of hemodialysis patients. J Transl Med 2016; 14:236. [PMID: 27495980 PMCID: PMC4974702 DOI: 10.1186/s12967-016-0995-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 07/28/2016] [Indexed: 01/10/2023] Open
Abstract
Background Hemodialysis patients have higher rates of cardiovascular morbidity and mortality compared to the general population. Mannose-binding lectin (MBL) plays an important role in the development of cardiovascular disease. In addition, hemodialysis alters MBL concentration and functional activity. The present study determines the predictive value of MBL levels for future cardiac events (C-event), cardiovascular events (CV-event) and all-cause mortality in HD patients. Methods We conducted a prospective study of 107 patients on maintenance hemodialysis. Plasma MBL, properdin, C3d and sC5b-9 was measured before and after one dialysis session. The association with future C-events, CV-events, and all-cause mortality was evaluated using Cox regression models. Results During median follow-up of 27 months, 36 participants developed 21 C-events and 36 CV-events, whereas 37 patients died. The incidence of C-events and CV-events was significantly higher in patients with low MBL levels (<319 ng/mL, lower quartile). In fully adjusted models, low MBL level was independently associated with increased CV-events (hazard ratio 3.98; 95 % CI 1.88–8.24; P < 0.001) and C-events (hazard ratio 3.96; 95 % CI 1.49–10.54; P = 0.006). No association was found between low MBL levels and all-cause mortality. Furthermore, MBL substantially improved risk prediction for CV-events beyond currently used clinical markers. Conclusions Low MBL levels are associated with a higher risk for future C-events and CV-events. Therefore, MBL levels may help to identify hemodialysis patients who are at risk to develop cardiovascular disease. Electronic supplementary material The online version of this article (doi:10.1186/s12967-016-0995-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Felix Poppelaars
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
| | - Mariana Gaya da Costa
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Stefan P Berger
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Solmaz Assa
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Anita H Meter-Arkema
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Mohamed R Daha
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Department of Nephrology, Leiden University Medical Center, University of Leiden, Leiden, The Netherlands
| | - Willem J van Son
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Casper F M Franssen
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Marc A J Seelen
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Abstract
The alternative pathway (AP) of complement can recognize nonself structures by only two molecules, C3b and factor H. The AP deposits C3b covalently on nonself structures via an amplification system. The actual discrimination is performed by factor H, which has binding sites for polyanions (sialic acids, glycosaminoglycans, phospholipids). This robust recognition of 'self' protects our own intact viable cells and tissues, while activating structures are recognized by default. Foreign targets are opsonized for phagocytosis or killed. Mutations in factor H predispose to severe diseases. In hemolytic uremic syndrome, they promote complement attack against blood cells and vascular endothelial cells and lead, for example, to kidney and brain damage. Even pathogens can exploit factor H. In fact, the ability to bind factor H discriminates most pathogenic microbes from nonpathogenic ones.
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Affiliation(s)
- Seppo Meri
- Immunobiology, Research Programs Unit, Department of Bacteriology and Immunology, Haartman Institute, University of Helsinki, Finland.,HUSLAB, Helsinki University Hospital, Finland.,Humanitas University, Milan, Italy
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Plovsing RR, Berg RMG, Munthe-Fog L, Konge L, Iversen M, Møller K, Garred P. Alveolar recruitment of ficolin-3 in response to acute pulmonary inflammation in humans. Immunobiology 2016; 221:690-7. [PMID: 26868430 DOI: 10.1016/j.imbio.2015.11.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 11/21/2015] [Accepted: 11/22/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND Ficolins serve as soluble recognition molecules in the lectin pathway of complement. They are known to participate in the systemic host-response to infection but their role in local pulmonary defence is still incompletely understood. The purpose of this study was to clarify whether acute lung and systemic inflammation induce recruitment of lectins in humans. METHODS Fifteen healthy volunteers received LPS intravenously (IV) or in a lung subsegment on two different occasions. Volunteers were evaluated by consecutive blood samples and by bronchoalveolar lavage 2, 4, 6, 8, or 24h after LPS (n=3 in all groups), and gene expression patterns and protein levels of mannose-binding lectin (MBL) and ficolins were determined. RESULTS Endobronchial LPS was associated with an increase in alveolar ficolin-3 and MBL levels (p<0.04 and p<0.001, respectively). IV LPS elicited a pronounced acute phase response with an increase in CRP (p<0.001) and plasma ficolin-1 protein levels (p<0.001), whereas no changes were observed in ficolin-1 gene expression patterns (p=0.11) or plasma protein levels of MBL, ficolin-2, or ficolin-3. CONCLUSIONS LPS induces a tissue-specific recruitment of ficolin-3 and ficolin-1 in the lung and systemic compartment, respectively, suggesting an important role of distinct lectin complement pathway initiators in the local pulmonary and systemic host defence.
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Affiliation(s)
- Ronni R Plovsing
- Department of Intensive Care, University Hospital Rigshospitalet, Copenhagen Ø, Denmark.
| | - Ronan M G Berg
- Department of Clinical Physiology, Nuclear Medicine & PET, University Hospital Rigshospitalet, Copenhagen Ø, Denmark; Centre of Inflammation and Metabolism, University Hospital Rigshospitalet, Copenhagen Ø, Denmark
| | - Lea Munthe-Fog
- Department of Clinical Immunology, Laboratory of Molecular Medicine, University Hospital Rigshospitalet, Copenhagen Ø, Denmark
| | - Lars Konge
- Centre for Clinical Education, University of Copenhagen and the Capital Region of Denmark, Copenhagen, Denmark
| | - Martin Iversen
- Department of Lung Transplantation, University Hospital Rigshospitalet, Copenhagen Ø, Denmark
| | - Kirsten Møller
- Department of Neuroanaesthesiology, Neurointensive Care Unit, University Hospital Rigshospitalet, Copenhagen Ø, Denmark; Centre of Inflammation and Metabolism, University Hospital Rigshospitalet, Copenhagen Ø, Denmark
| | - Peter Garred
- Department of Clinical Immunology, Laboratory of Molecular Medicine, University Hospital Rigshospitalet, Copenhagen Ø, Denmark
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48
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Zhang X, Hu Y, Shen J, Zeng H, Lu J, Li L, Bao Y, Liu F, Jia W. Low levels of ficolin-3 are associated with diabetic peripheral neuropathy. Acta Diabetol 2016; 53:295-302. [PMID: 26116288 DOI: 10.1007/s00592-015-0780-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 05/26/2015] [Indexed: 01/08/2023]
Abstract
AIMS Ficolin-3, a soluble molecule of the innate immune system, has a primary role in the activation of the lectin pathway in the complement system. Considering that inflammatory mechanisms are involved in complement activation and take part in the pathophysiology of diabetic peripheral neuropathy (DPN), we conducted this study to explore the link between serum ficolin-3 and DPN in diabetic patients. METHODS A total of 466 diabetic patients were enrolled in this cross-sectional study. DPN was evaluated by neurological symptoms, neurological signs, neurothesiometer and electromyogram. The concentration of serum ficolin-3 was determined by enzyme-linked immunosorbent assay. RESULTS The concentration of serum ficolin-3 was lower in DPN patients compared with non-DPN patients (18.73 ± 4.75 vs. 26.69 ± 5.68 ng/mL, P < 0.001). In addition, it was found negatively correlated to the vibration perception threshold (r = -0.158; P = 0.025). The results of multiple regression analysis of DPN indicated that age, diabetes duration, serum ficolin-3 were all independent impact factors for DPN (P < 0.05). Patients were then assigned into quartiles according to the serum ficolin-3 levels, and the prevalence of DPN ascended as the concentration of ficolin-3 descended (Trend analysis, P < 0.001). Compared with ficolin-3 Quartile 1 (referent), the risk of DPN was significantly greater in Quartile 2 (OR 2.76; 95 % CI 1.56-4.88; P < 0.001), Quartile 3 (OR 3.02; 95 % CI 1.69-5.40; P < 0.001) and Quartile 4 (OR 6.84; 95 % CI 3.39-13.80; P < 0.001). CONCLUSIONS Lower ficolin-3 level is independently associated with DPN, and it may be a potential biomarker for DPN.
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Affiliation(s)
- Xiaoyan Zhang
- Department of Endocrinology and Metabolism, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Shanghai Institute of Diabetes, Shanghai Key Laboratory of Diabetes, 600 Yishan Road, Shanghai, 200233, China
| | - Yanyun Hu
- Department of Endocrinology and Metabolism, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Shanghai Institute of Diabetes, Shanghai Key Laboratory of Diabetes, 600 Yishan Road, Shanghai, 200233, China
| | - Jing Shen
- Department of Endocrinology and Metabolism, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Shanghai Institute of Diabetes, Shanghai Key Laboratory of Diabetes, 600 Yishan Road, Shanghai, 200233, China
| | - Hui Zeng
- Department of Endocrinology and Metabolism, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Shanghai Institute of Diabetes, Shanghai Key Laboratory of Diabetes, 600 Yishan Road, Shanghai, 200233, China
| | - Junxi Lu
- Department of Endocrinology and Metabolism, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Shanghai Institute of Diabetes, Shanghai Key Laboratory of Diabetes, 600 Yishan Road, Shanghai, 200233, China
| | - Lianxi Li
- Department of Endocrinology and Metabolism, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Shanghai Institute of Diabetes, Shanghai Key Laboratory of Diabetes, 600 Yishan Road, Shanghai, 200233, China
| | - Yuqian Bao
- Department of Endocrinology and Metabolism, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Shanghai Institute of Diabetes, Shanghai Key Laboratory of Diabetes, 600 Yishan Road, Shanghai, 200233, China
| | - Fang Liu
- Department of Endocrinology and Metabolism, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Shanghai Institute of Diabetes, Shanghai Key Laboratory of Diabetes, 600 Yishan Road, Shanghai, 200233, China.
| | - Weiping Jia
- Department of Endocrinology and Metabolism, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Shanghai Institute of Diabetes, Shanghai Key Laboratory of Diabetes, 600 Yishan Road, Shanghai, 200233, China.
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Golshayan D, Wójtowicz A, Bibert S, Pyndiah N, Manuel O, Binet I, Buhler LH, Huynh-Do U, Mueller T, Steiger J, Pascual M, Meylan P, Bochud PY. Polymorphisms in the lectin pathway of complement activation influence the incidence of acute rejection and graft outcome after kidney transplantation. Kidney Int 2016; 89:927-38. [PMID: 26924055 DOI: 10.1016/j.kint.2015.11.025] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Revised: 09/26/2015] [Accepted: 11/12/2015] [Indexed: 01/01/2023]
Abstract
There are conflicting data on the role of the lectin pathway of complement activation and its recognition molecules in acute rejection and outcome after transplantation. To help resolve this we analyzed polymorphisms and serum levels of lectin pathway components in 710 consecutive kidney transplant recipients enrolled in the nationwide Swiss Transplant Cohort Study, together with all biopsy-proven rejection episodes and 1-year graft and patient survival. Functional mannose-binding lectin (MBL) levels were determined in serum samples, and previously described MBL2, ficolin 2, and MBL-associated serine protease 2 polymorphisms were genotyped. Low MBL serum levels and deficient MBL2 diplotypes were associated with a higher incidence of acute cellular rejection during the first year, in particular in recipients of deceased-donor kidneys. This association remained significant (hazard ratio 1.75, 95% confidence interval 1.18-2.60) in a Cox regression model after adjustment for relevant covariates. In contrast, there was no significant association with rates of antibody-mediated rejection, patient death, early graft dysfunction or loss. Thus, results in a prospective multicenter contemporary cohort suggest that MBL2 polymorphisms result in low MBL serum levels and are associated with acute cellular rejection after kidney transplantation. Since MBL deficiency is a relatively frequent trait in the normal population, our findings may lead to individual risk stratification and customized immunosuppression.
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Affiliation(s)
- Déla Golshayan
- Transplantation Center, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland; Transplantation Immunopathology Laboratory, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland.
| | - Agnieszka Wójtowicz
- Service of Infectious Diseases, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Stéphanie Bibert
- Service of Infectious Diseases, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Nitisha Pyndiah
- Service of Infectious Diseases, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Oriol Manuel
- Transplantation Center, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland; Service of Infectious Diseases, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Isabelle Binet
- Nephrologie und Transplantationsmedizin, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Leo H Buhler
- Centre Universitaire Romand de Transplantation, Hôpitaux Universitaires de Genève, Geneva, Switzerland
| | - Uyen Huynh-Do
- Department of Nephrology and Hypertension, Inselspital Bern, Bern, Switzerland
| | - Thomas Mueller
- Department of Nephrology, University Hospital Zurich, Zurich, Switzerland
| | - Jürg Steiger
- Transplantation Immunology and Nephrology, University Hospital Basel, Basel, Switzerland
| | - Manuel Pascual
- Transplantation Center, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland; Transplantation Immunopathology Laboratory, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Pascal Meylan
- Transplantation Center, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland; Service of Infectious Diseases, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Pierre-Yves Bochud
- Service of Infectious Diseases, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
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50
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Ulrich-Lynge SL, Juul-Madsen HR, Kjærup RB, Okimoto R, Abrahamsen MS, Maurischat S, Sørensen P, Dalgaard TS. Broilers with low serum Mannose-binding Lectin show increased fecal shedding of Salmonella enterica serovar Montevideo. Poult Sci 2016; 95:1779-86. [PMID: 26994208 DOI: 10.3382/ps/pew101] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2016] [Indexed: 11/20/2022] Open
Abstract
Mannose-binding lectin (MBL) is a key molecule in innate immunity. MBL binds to carbohydrates on the surface of pathogens, initiating the complement system via the lectin-dependent pathway or facilitates opsonophagocytosis. In vivo studies using inbred chicken lines differing in MBL serum concentration indicate that chicken MBL affects Salmonella resistance; further studies are imperative in conventional broiler chickens. In this study 104 conventional day-old chickens (offspring from a cross between Cobb 500 male and female parent breeders) were orally infected with Salmonella enterica subsp. enterica serovar Montevideo. The chickens were divided into two groups based on polymorphisms in their MBL promoter region, designated L/L for low serum concentrations of MBL and L/H for medium serum concentrations of MBL. A semi-quantitative real-time PCR method for detection of Salmonella in cloacal swabs was used, the log10 CFU quantification was based on a standard curve from artificially spiked cloacal swab samples pre-incubated for 8 h with known concentrations of Salmonella ranging from 10(1) to 10(6) CFU/swabs, with an obtained amplification efficiency of 102% and a linear relationship between the log10 CFU and the threshold cycle Ct values of (R(2) = 0.99). The L/L chickens had significantly higher Log10 CFU/swab at week 5 post infection (pi) than the L/H chickens. A repetition of the study with 86 L/L and 18 L/H chickens, also gave significantly higher log10 CFU ± SEM in cloacal swabs, using the semi-quantitative real-time PCR method from L/L chickens than from the L/H chickens at week 5 pi. These results indicate that genetically determined basic levels of MBL may influence S. Montevideo susceptibility.
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Affiliation(s)
- Sofie L Ulrich-Lynge
- Department of Animal Science, Aarhus University, Blichers Allé 20, P.O. Box 50, DK-8830 Tjele, Denmark
| | - Helle R Juul-Madsen
- Department of Animal Science, Aarhus University, Blichers Allé 20, P.O. Box 50, DK-8830 Tjele, Denmark
| | - Rikke B Kjærup
- Department of Animal Science, Aarhus University, Blichers Allé 20, P.O. Box 50, DK-8830 Tjele, Denmark
| | - Ron Okimoto
- Cobb-Vantress Inc., P.O. Box 1030, U.S.-4703, Highway 412 East, Siloam Springs, Arkansas 72761-1030, USA
| | - Mitchell S Abrahamsen
- Cobb-Vantress Inc., P.O. Box 1030, U.S.-4703, Highway 412 East, Siloam Springs, Arkansas 72761-1030, USA
| | - Sven Maurischat
- Federal Institute for Risk Assessment, Unit Molecular Microbiology and Genome Analysis, National Salmonella Reference Laboratory, Diedersdorfer Weg 1, D-12277 Berlin, Germany
| | - Poul Sørensen
- Department of Molecular Biology and Genetics, Aarhus University, Blichers Allé 20, P.O. Box 50, DK-8830 Tjele, Denmark
| | - Tina S Dalgaard
- Department of Animal Science, Aarhus University, Blichers Allé 20, P.O. Box 50, DK-8830 Tjele, Denmark
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